United States of America v. Barry Ferguson

The Honorable Arthur J. Tarnow, United States District Judge for the Eastern District of*
Michigan, sitting by designation.
NOT RECOMMENDED FOR FULL-TEXT PUBLICATION
File Name: 07a0763n.06
Filed: October 26, 2007
No. 06-6500
UNITED STATES COURT OF APPEALS
FOR THE SIXTH CIRCUIT
UNITED STATES OF AMERICA,
Plaintiff-Appellee,
v.
BARRY FERGUSON,
Defendant-Appellant.
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ON APPEAL FROM THE
UNITED STATES DISTRICT
COURT FOR THE WESTERN
DISTRICT OF TENNESSEE
O P I N I O N
Before: MOORE and GRIFFIN, Circuit Judges; and TARNOW, District Judge.*
KAREN NELSON MOORE, Circuit Judge. The defendant asks this court to reverse his
criminal conviction on the grounds that the district court did not exclude evidence seized after a knock-
and-announce violation, that the chancellor lacked probable cause to issue a warrant because the affiant
did not adequately corroborate the tip of his confidential informant, and that the district court judge
impermissibly limited the questioning of the affiant. We find all of these claims to be without merit and
AFFIRM the district court’s judgment.
I. BACKGROUND
In April 2004, Robert Harrison, a five-year veteran of the West Tennessee Violent Crime and Drug
Task Force, interviewed a confidential informant (“CI”) who had previously provided Harrison with
information leading to five felony convictions of drug traffickers, five seizures of cocaine, and one seizure
of marijuana. On this occasion, the CI provided several pieces of information to Harrison about an alleged

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drug trafficker, Barry Ferguson. The tip included the following information: (1) that Ferguson went by
the alias “Slow”; (2) that Ferguson had a prior conviction for a drug offense; (3) that Ferguson used a
green, boxy Chevrolet or Buick in his drug trafficking; and (4) the location of Ferguson’s residence. Joint
Appendix (“J.A.”) at 46 (Aff. for Warrant ¶ 6, 8, 9). The CI also told Harrison that he had witnessed
Ferguson sell cocaine from the residence within the last five days. Harrison independently confirmed that
Ferguson used the alias “Slow,” that Ferguson had a prior drug conviction, and that Ferguson paid the
utility bills at the alleged residence.
On April 23, 2004, Harrison applied for and received a warrant to search for cocaine and other drug
paraphernalia at Ferguson’s residence. That afternoon, Harrison and others on the West Tennessee Violent
Crime and Drug Task Force executed the warrant. During the search, the agents seized cocaine,
marijuana, and 10.8 grams of crack cocaine. Several drug-trade items were also seized. Ferguson was
arrested and charged with possession with intent to distribute approximately 140 grams of cocaine, more
than five grams of crack cocaine, and approximately two pounds of marijuana.
Prior to trial, Ferguson filed a motion to suppress the evidence seized in the search of his residence
on the grounds that the officers failed to “knock and announce” prior to entering. J.A. at 31-35 (Mot. to
Suppress). At the hearing on the motion, the United States called Donald Blackwell, who was an
experienced narcotics investigator and one of the officers who executed the warrant. Blackwell testified
that the officers did knock and announce their presence; Blackwell stated: “I went up onto the door, I
knocked on the door and announced, ‘Police, search warrant,’ repeatedly.” J.A. at 87 (Suppression Hr’g
Tr. of Mar. 23, 2005, Blackwell Test. at 16:10-11). Blackwell testified that after knocking he heard a
voice say “I’m coming.” The first time the voice was closer to the door, but as the police kept knocking,
they heard the same voice say “I’m coming” a second time from further away. J.A. at 87 (Suppression
Hr’g Tr. of Mar. 23, 2005, Blackwell Test. at 16:16-22).

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Harrison was also standing at the door. Using his watch, he kept track of the time that elapsed
between the initial knock and when the officers made entry to the residence. Harrison testified that more
than twenty-five seconds passed before he gave the order to breach the door.
In response to the testimony by the officers, Ferguson presented testimony by three witnesses. The
first was Edward Harvey, Ferguson’s neighbor, who at the time of the search was about one hundred yards
from Ferguson’s house. Harvey’s testimony did not contradict the police testimony, because he observed
the police arrive and saw them kick the door in about one minute later.
Ferguson next called Jerry Phelps, Ferguson’s neighbor and friend. Although Phelps testified that
he was only twenty to thirty yards from Ferguson’s house, the police estimated that the distance was
approximately 125 to 150 yards. Phelps testified that, despite trees obscuring his view, he saw the police
stop at the door for “[p]robably less than ten [seconds],” J.A. at 111 (Suppression Hr’g Tr. of Mar. 23,
2005, Phelps Test. at 40:15), and that the police did not say anything before entering the residence. Phelps
admitted that at the time of the search he had been drinking for forty to forty-five minutes.
Ferguson also called Jesse Brown, Ferguson’s cousin, who estimated that at the time of search he
was about fifty yards from Ferguson’s home. Although there were trees obstructing his view of
Ferguson’s house, Brown testified that he could hear the police yell after they entered the residence but
did not mention whether he heard the police say anything before they entered. J.A. at 120 (Suppression
Hr’g Tr. of Mar. 23, 2005, Brown Test. at 49:4-20). Although Brown did not see the officers enter
Ferguson’s home, he estimated that more than ten seconds passed between when the police arrived and
when he heard the police kick in the door. By the time the search took place, Brown had consumed about
six beers over a three- to four-hour period.
The district court concluded that the police knocked and announced in a way that comported with
the dictates of the Fourth Amendment. As to the factual matter of whether the officers alerted Ferguson
to their presence before entry, the district court believed that Ferguson’s witnesses’ testimony was

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“somewhat suspect.” J.A. at 142 (Tr. at 71:20-22). The district court found that Harvey’s testimony did
not contradict the police testimony and noted that Ferguson’s other two witnesses were unsure of several
factors, including the time the police arrived and their distance from Ferguson’s home. The district court
was also concerned that the witnesses’ perceptions may have been influenced by alcohol. On balance, the
district court credited the officers’ testimony and concluded that a knock and announce did occur.
The district court next evaluated the reasonableness of the knock-and-announce procedure and
concluded that it complied with the Fourth Amendment. Because the officers were searching for cocaine,
a drug that traffickers can dispose of quickly, the district court believed that the officers did not need to
wait very long before entering Ferguson’s home. In addition, the officers “could certainly reasonably
suspect . . . something was afoot” when they heard an occupant moving further from the door, not closer.
J.A. at 146-47 (Tr. at 75:19-76:4). On those grounds, the district court denied the motion to suppress.
On October 24, 2005, Ferguson filed another suppression motion, this time alleging that the
affidavit did not provide the issuing chancellor with the necessary probable cause. Ferguson claimed that
the affidavit was uncorroborated and too general, but the district court found, when considering the totality
of the affidavit, a mix of specific and general statements from a reliable CI. The district court concluded
that this constituted a sufficient basis for the issuing chancellor’s finding of probable cause.
On August 7, 2006, Ferguson pleaded guilty to possession with intent to distribute more than five
grams of a cocaine base, i.e., crack cocaine. He was sentenced to sixty-three months of imprisonment and
four years of supervised release. In accordance with his conditional guilty plea, Ferguson filed this timely
appeal.

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The current version reads: “The officer may break open any outer or inner door or window1
of a house, or any part of a house, or anything therein, to execute a search warrant, if, after notice
of his authority and purpose, he is refused admittance or when necessary to liberate himself or a
person aiding him in the execution of the warrant.” 18 U.S.C. § 3109.
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II. MOTION TO SUPPRESS BASED ON THE KNOCK AND ANNOUNCE
A. Standard of Review
“When reviewing the denial of a motion to suppress, we review the district court’s findings of fact
for clear error and its conclusions of law de novo.” United States v. Foster, 376 F.3d 577, 583 (6th Cir.)
(internal quotation marks omitted), cert. denied, 543 U.S. 1012 (2004). We review the evidence “in the
light most likely to support the district court’s decision.” Id. (internal quotation marks omitted).
B. The Exclusionary Rule
The idea that the police must announce their presence before entering a residence is a common-law
principle “‘embedded in Anglo-American law.’” Wilson v. Arkansas, 514 U.S. 927, 934 (1995) (quoting
Miller v. United States, 357 U.S. 301, 313 (1958)). The purposes of the knock-and-announce rule are to
reduce the potential for violence, diminish the destruction of property, and serve as “a recognition of the
individual’s right to privacy in his [or her] house.” United States v. Bates, 84 F.3d 790, 794 (6th Cir.
1996) (internal quotation marks omitted) (alteration in original).
The rule has found instantiation in American law through three means. First, the requirement that
federal officers knock and announce before entering a house was codified in 1917. 18 U.S.C. §§ 618, 619,
40 Stat. 217, 229 (1917) (current version at 18 U.S.C. § 3109). Second, some states have enshrined the1
restriction in state law. See, e.g., OHIO REV. CODE ANN. § 2935.12; TENN. R. CRIM. P. 41(e)(2). Third,
in 1995, knock and announce was given constitutional significance when the Supreme Court held that
adherence to the knock-and-announce requirement is “an element of the reasonableness inquiry under the
Fourth Amendment.” Wilson, 514 U.S. at 934.

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Although each form of the rule – federal statutory, state statutory, and constitutional – share the
same common-law foundation, they do not necessarily share a common remedy following a violation. See
United States v. Ramos, 923 F.2d 1346, 1355 n.19 (9th Cir. 1991) (“It is by no means certain that the
protections afforded suspects by section 3109 exactly parallel those assured by the fourth amendment.”).
For nearly half a century, the Supreme Court had recognized the exclusionary rule as the appropriate
remedy following a violation of the federal statutory form of the knock-and-announce rule. Miller, 357
U.S. at 313-14 (holding that evidence should have been suppressed following a violation of § 3109). And
we have followed that remedy. United States v. Nabors, 901 F.2d 1351, 1354 (6th Cir.) (“If evidence is
procured in violation of § 3109, that evidence must be suppressed.”), cert. denied, 498 U.S. 871 (1990).
Some states, with their own knock-and-announce rule, have independently applied the exclusionary rule
as the appropriate remedy. See, e.g., TENN. R. CRIM. P. 41(g); State v. Perry, 178 S.W.3d 739, 745 (Tenn.
Crim. App. 2005). But Wilson, despite bringing knock and announce into the domain of the Fourth
Amendment, left open the question of the proper remedy for violations of the constitutional form of the
rule. See Robin L. Gentry, Note, Why Knock? The Door Will Inevitably Open: An Analysis of People v.
Stevens and the Michigan Supreme Court’s Departure From Fourth Amendment Protection, 46 WAYNE
L. REV. 1659, 1684-85 (2000) (speculating that the exclusionary rule would be the correct remedy, but
acknowledging that the Supreme Court did not resolve the matter); Todd Witten, Note, Wilson v.
Arkansas: Thirty Years After Ker the Supreme Court Addresses the Knock and Announce Issue, 29 AKRON
L. REV. 447, 467 (1996) (noting the unresolved issue of “whether exclusion is a constitutionally compelled
remedy” for violations of the knock-and-announce rule).
Recently, the Supreme Court, in Hudson v. Michigan, — U.S. —, 126 S. Ct. 2159 (2006), resolved
this question and announced that the exclusionary rule was not an available remedy following a violation
of the Fourth Amendment’s knock-and-announce rule. In Hudson, the government conceded that the
police failed to knock and announce. Id. at 2163. Despite the violation of the rule, the Court held that

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exclusion of the drugs and firearms that the police found in the search was not the appropriate remedy.
Id. at 2165.
While the Court was clear about the availability, or lack thereof, of the exclusionary rule for the
Fourth Amendment variant of the knock-and-announce rule, the Hudson decision involved only a
prosecution in state court and thus did not resolve the issue of the continuing viability of the exclusionary
rule as a remedy for violations of 18 U.S.C. § 3109. There is room for disagreement regarding whether
the exclusionary rule should remain available as a remedy for violations of § 3109. Compare United
States v. Bruno, 487 F.3d 304, 306 (5th Cir.) (declaring the exclusionary rule inapplicable following a
violation of § 3109), cert. denied, — S. Ct. —, 2007 WL 2401840 (Oct. 1, 2007); United States v.
Southerland, 466 F.3d 1083, 1085-86 (D.C. Cir. 2006) (same and concluding that Ҥ 3109 and the Fourth
Amendment have merged both in the standards governing entries into the home and in the remedy for
violations of those standards”), cert. denied, 127 S. Ct. 1361 (2007), with Orin Kerr, Remedies for Knock-
and-Announce Violations in Federal Court After Hudson v. Michigan (July 11, 2006),
http://www.orinkerr.com/2006/07/11/remedies-for-knock-and-announce-violations-in-
federal-court-after-hudson-v-michigan (arguing that § 3109’s exclusionary remedy survives Hudson).
Luckily, we need not wade into these murky waters, for we conclude for other reasons that Hudson
governs our decision in the case at hand.
Section 3109, regardless of its concomitant remedy, does not apply to this case because § 3109
does not govern when there is “a state warrant executed by state law enforcement.” United States v.
Pinson, 321 F.3d 558, 565 n.2 (6th Cir.) (refusing to consider § 3109 when Nashville officers procured
the warrant and conducted the search, even though the federal government prosecuted the case), cert.
denied, 540 U.S. 912 (2003); United States v. Gatewood, 60 F.3d 248, 249 (6th Cir.) (holding § 3109
inapplicable to a search conducted by officers of a county sheriff’s office because it “regulates only federal
officers . . . and has no application when ‘state officers, acting totally without federal involvement, seize

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According to the record, the federal government was involved with Ferguson’s case at some2
point after the search took place. See J.A. at 76-77 (Tr. at 5:24-6:24). However, Ferguson has never
challenged the government’s assertion at the suppression hearing that the federal involvement came
only after the search. See J.A. at 77 (id. at 6:11-15) (responding to the government’s claim that
federal officers had nothing to do with the warrant or the search, Ferguson’s attorney stated “I was
not aware that the feds weren’t involved until only on the back end. And I’m certainly not disputing
what has been proffered to the court. I’ll accept it as fact. You know, I don’t dispute that”). The
defendant bears the initial burden of establishing a prima facie violation of § 3109, United States
v. Murrie, 534 F.2d 695, 697-98 (6th Cir. 1976), but in this case, Ferguson has not asserted that
federal officers were involved in a manner that would trigger § 3109. Therefore, we hold that
§ 3109 is inapplicable to the case at bar without deciding the extent of interaction between state and
federal officers that would trigger § 3109.
Hudson was decided on June 15, 2006, and governs this direct appeal. See United States3
v. Johnson, 457 U.S. 537, 562 (1982) (holding that, subject to narrow exceptions, “a decision of this
Court construing the Fourth Amendment is to be applied retroactively to all convictions that were
not yet final at the time the decision was rendered”); see also Griffith v. Kentucky, 479 U.S. 314, 328
(1987) (applying a decision to all cases “pending on direct review or not yet final” even if the
decision represents a “clear break” with the past).
8
evidence that is later offered in a federal prosecution’” (quoting United States v. Moore, 956 F.2d 843, 847
(8th Cir. 1992))), cert. denied, 516 U.S. 1001 (1995). Thus, Ferguson had three variations of the knock-
and-announce rule upon which he could rely: state, federal, and constitutional. At no point has he asserted
an argument under Tennessee law, so we need not consider its applicability. The federal variant is
inapplicable to Ferguson’s case because state officers procured the warrant and conducted the search of
Ferguson’s home. Therefore, Ferguson could claim only a constitutional knock-and-announce defense,2
which is governed by Hudson.3
Because Hudson controls this case, we cannot conclude that the district court erred by denying the
motion to suppress on the basis of a knock-and-announce violation; the exclusion of evidence was not an
available remedy. See United States v. White, No. 05-6737, 2007 WL 1217960, at *2 (6th Cir. Apr. 25,
2007) (unpublished) (“However, defendant overlooks the fact that although the conviction in this case was
obtained in federal court, the officers executing the search warrant were city policemen, not federal

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officers. . . . The situation here thus falls under the rule in Hudson, and the exclusionary rule does not
apply.”).
Because we conclude that Hudson applies to bar the suppression of evidence in this case, we need
not address the district court’s factual determination that the officers did knock and announce, or the
reasonableness of the procedure that the officers used.
III. MOTION TO SUPPRESS BASED ON PROBABLE CAUSE
A. Standard of Review
Once again, “we review the district court’s findings of fact for clear error and its conclusions of
law de novo.” Foster, 376 F.3d at 583 (internal quotation marks omitted). However, when considering
the issuing magistrate’s actions, we have observed that “[t]he standard of review for determining the
sufficiency of the affidavit ‘is whether the magistrate had a substantial basis for finding that the affidavit
established probable cause to believe that the evidence would be found at the place cited.’ We do not
engage in de novo review of the affidavit, but ‘[r]ather the magistrate’s probable cause determination
should be afforded great deference.’” United States v. Rodriguez-Suazo, 346 F.3d 637, 643 (6th Cir. 2003)
(quoting United States v. Davidson, 936 F.2d 856, 859 (6th Cir. 1991)). “This circuit has long held that
an issuing magistrate’s discretion should only be reversed if it was arbitrarily exercised.” United States
v. Allen, 211 F.3d 970, 973 (6th Cir.) (en banc), cert. denied, 531 U.S. 907 (2000). When evaluating the
sufficiency of the affidavit under this deferential standard, the affidavit must be considered as a whole;
“‘line-by-line scrutiny [of an underlying affidavit is] . . . inappropriate in reviewing [a] magistrate[’s]
decisions.’” Id. at 973 (alterations and omission in original) (quoting Illinois v. Gates, 462 U.S. 213, 246
n.14 (1983)).
B. The Reliability of a Confidential Informant
Our cases have identified three categories of informants: (1) named informants; (2) confidential
informants, who are known to the affiant but not to the magistrate; and (3) anonymous informants, who

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are known to no one but the informant. Whereas naming an informant is often, but not always, an
indicator of reliability, 2 WAYNE R. LAFAVE, SEARCH AND SEIZURE § 3.3(c) at 136 (4th ed. 2004), the
police must find other ways to bolster the tips of the other, confidential or anonymous, informants. For
instance, we demand consideration of an informant’s “veracity, reliability, and ‘basis of knowledge’” when
dealing with a confidential informant, as we are in this case. Rodriguez-Suazo, 346 F.3d at 646 (quoting
United States v. Smith, 182 F.3d 473, 477 (6th Cir. 1999)). These factors are not evaluated independently;
rather, the presence of more of one factor makes the others less important. For instance, the more reliable
the informant, the less detail the informant must provide in his tips before a magistrate can find probable
cause. See Gates, 462 U.S. at 233.
In its brief, the government leans heavily upon Allen. We conclude, however, that Allen is
inapposite, because although Allen suggested that a magistrate may find probable cause where an affiant
simply attests to the reliability of the informant, Allen involved a named informant, not a confidential
informant. Allen, 211 F.3d at 976. Our post-Allen confidential informant cases, in contrast, have
continued our pre-Allen approach of demanding that an affidavit demonstrate more than simply blind faith
in the words of an affiant who claims his unnamed informant is reliable. For example, in
Rodriguez-Suazo, even though the officer’s confidential informant had provided prior tips that resulted
in over three arrests and convictions, the police still conducted some (albeit minimal) corroboration of the
tip in question. 346 F.3d at 646-47. Similarly, in United States v. May, 399 F.3d 817 (6th Cir. 2005), we
held that the tip of an unnamed confidential informant can support a finding of probable cause when “the
issuing judge had before him ‘additional evidence [that] buttressed the informant’s information.’” 399
F.3d at 824 (quoting United States v. Williams, 224 F.3d 530, 532 (6th Cir. 2000)). One piece of
additional evidence that the May court considered was that the informant had provided reliable information
in the past, but we also considered the independent corroboration by the police. See also United States
v. Williams, 224 F.3d 530, 532-33 (6th Cir. 2000) (finding probable cause from an affidavit that relied on

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Because the confidential informant in this case had provided a significant level of prior and4
accurate assistance in the past, we need not consider the concern that Officer Harrison corroborated
only innocent facts. See LAFAVE, § 3.3(f) at 189 (“[A] lesser quantum of corroboration may be
legitimately relied upon in combination with other circumstances tending to show veracity even if
no one of them alone would suffice.”). Had the confidential informant not had a track-record of
veracity and reliability, we would be required to resolve at what point the “corroboration of a very
few nonsuspicious and easily predictable events should not suffice.” Id. at 187-88.
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a confidential informant who had previously provided information leading to arrests and convictions, but
where the affiant also mentioned his own personal knowledge regarding the sale of drugs at the location
to be searched and the affiant separately informed the issuing judge about police surveillance of the
residence), cert. denied, 531 U.S. 1095 (2001).
Applying this precedent, we conclude that the issuing chancellor had a substantial basis to conclude
that there was probable cause to believe that a search of Ferguson’s residence would yield evidence of
criminal conduct. Officer Harrison did not name his confidential informant for the chancellor; thus, in
evaluating the reliability of the tip and the existence of probable cause, the chancellor required additional
bolstering information. In this case, the officer attested to the confidential informant’s prior successful
assistance five previous times and also discussed his own efforts at corroborating elements of the
confidential informant’s tip. These two factors combine to provide a substantial basis for the issuing
chancellor’s probable-cause determination.4
C. The Generality of the Confidential Informant’s Tip
Additionally, Ferguson urges this court to overturn the district court’s denial of the motion to
suppress because the confidential informant “only gave general information, not explicit and detailed
information of any wrongdoing.” Appellant Br. at 7. In particular, the Appellant suggests that there can
be no probable cause when the informant does not provide specific dates of sales, the names of buyers,
the location of the drugs, or specific details about the home or car mentioned in the tip. Id.

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Although an affidavit “‘must contain adequate supporting facts about the underlying circumstances
to show that probable cause exists for the issuance of the warrant,’” United States v. Gardiner, 463 F.3d
445, 470 (6th Cir. 2006) (quoting United States v. Weaver, 99 F.3d 1372, 1377 (6th Cir. 1996)), we have
never required the level of detail that Ferguson demands. The Allen court, for example, upheld a finding
of probable cause when the informant claimed there were drugs at a named location and that the informant
had personally observed the drugs within seventy-two hours of the tip. Allen, 211 F.3d at 971-72. The
informant’s tip in Allen, similar to Harrison’s informant’s tip, lacked many specifics; the warrant was not
specific as to the amount of cocaine and there was no explanation of how the informant was able to
identify the powder as cocaine. Id. at 975; see also Rodriguez-Suazo, 346 F.3d at 647 (upholding a finding
of probable cause where the informant did not offer details on prior drug sales he supposedly witnessed,
but did note that he had witnessed the suspect in a drug sale within the last forty-eight hours); Williams,
224 F.3d at 531-33 (upholding a finding of probable cause where the informant stated only that he had
observed the suspect in possession of cocaine at the residence in the last seventy-two hours).
Our evaluation of the specificity of an informant’s tip is not an independent consideration; the level
of generality is but one factor that the issuing magistrate must consider in the probable-cause
determination that we have already discussed here. We conclude that in this case, although the
confidential informant did not provide certain specifics, he did claim to have seen a drug sale within five
days of his tip, and this level of generality is not, by itself, fatal to the chancellor’s finding of probable
cause.
IV. THE DISTRICT COURT’S LIMITATION OF TESTIMONY
A. Standard of Review
“The conduct of a criminal trial is a matter within the discretion of the court. . . . [S]uch discretion
will not be disturbed in the absence of a clear showing of abuse.” United States v. Wade, 364 F.2d 931,
936 (6th Cir. 1966). Even if there is a clear showing of abuse, “a judge’s rulings will not be the basis for

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A federal judge acting in his official capacity could not violate the appellant’s rights under5
the Fourteenth Amendment, see, e.g., Shelley v. Kraemer, 334 U.S. 1, 18 (1948) (“[The Fourteenth]
Amendment by its terms applies only to the States.”), but we can evaluate this claim as though it
were appropriately raised under the Fifth Amendment.
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reversal of a criminal conviction unless a defendant’s substantial rights are affected.” United States v.
Terry, 729 F.2d 1063, 1067 (6th Cir. 1984) (applying FED. R. EVID. 611).
B. Analysis
Ferguson claimed in his brief that “[d]ue to the denial of the trial court to allow counsel to assess
the ‘totality of circumstances’ that the officer knew at the time the warrant was issued, the Appellant’s
Fourteenth Amendment Due Process Rights were violated.” Appellant Br. at 8. During the incident in5
question, Ferguson called the affiant, Harrison, as a witness in the hearing on the motion to suppress
challenging the existence of probable cause. As Ferguson’s attorney tried to ask questions about actions
that Harrison might have taken, but not reported, to corroborate the CI’s tip, the district court repeatedly
emphasized skepticism over the value of the testimony. After interrupting the questioning three times with
concerns about relevancy, the district court decided that Harrison’s efforts to corroborate the CI’s tip,
beyond what was described in the affidavit, were irrelevant to the evaluation of probable cause, and the
court stopped this line of questioning. In response, Ferguson concluded his questioning of Harrison.
A trial judge has broad discretion to control testimony in her court to ensure that only relevant
evidence is presented and that the court’s time is not wasted. See FED. R. EVID. 611(a) (“The court shall
exercise reasonable control over the mode and order of interrogating witnesses and presenting evidence
so as to (1) make the interrogation and presentation effective for the ascertainment of the truth, (2) avoid
needless consumption of time, and (3) protect witnesses from harassment or undue embarrassment.”).
Accordingly, “courts may curtail or entirely preclude questioning as to any matter of questionable
relevance.” 28 CHARLES ALAN WRIGHT & VICTOR JAMES GOLD, FEDERAL PRACTICE AND PROCEDURE
§ 6164, at 357 & n.49 (1993).

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We cannot conclude that the district court judge’s actions constitute an abuse of discretion.
Ferguson was trying to elicit testimony as to any additional information the affiant Harrison had but did
not disclose at the time the warrant was issued. Generally speaking, however, the sufficiency of an
affidavit is judged solely upon “the adequacy of what it does contain, not on what it lacks.” Allen, 211
F.3d at 975. The one exception to this general rule is that in a Franks hearing, pursuant to Franks v.
Delaware, 438 U.S. 154 (1978), a defendant can try to show that the affiant omitted some material fact
that would have swayed the magistrate’s probable-cause determination. See Hale v. Kart, 396 F.3d 721,
726 n.4 (6th Cir. 2005). Although such questions about Harrison’s knowledge at the time he requested
a warrant would be relevant in a Franks hearing, Ferguson was not in a Franks hearing when his attorney
attempted to ask these questions. Thus, the questioning was not relevant in the context in which it was
occurring.
Furthermore, to qualify for a Franks hearing, a defendant must “make[] a substantial preliminary
showing that a false statement knowingly and intentionally, or with reckless disregard for the truth, was
included by the affiant in the warrant affidavit, and [ ] the allegedly false statement is necessary to the
finding of probable cause.” Franks, 438 U.S. at 155-156; see also United States v. Graham, 275 F.3d 490,
505 (6th Cir. 2001), cert. denied, 535 U.S. 1026 (2002). It appears from the record that Ferguson could
not have made the substantial preliminary showing necessary to qualify. While Ferguson had asked both
of his attorneys to seek a Franks hearing, his attorneys refused on ethical grounds. J.A. at 193 (Tr. at 5:12-
17) (“Both Mr. Brown[, Ferguson’s original attorney,] and I have told Mr. Ferguson that we can’t ethically
do that, and I’m not going to perpetrate fraud on a court.”).
Accordingly, we cannot conclude that it was an abuse of discretion for the district court to limit
testimony that could have been relevant only for a hearing that Ferguson was not then seeking, and was
apparently not entitled to obtain.

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V. CONCLUSION
For the foregoing reasons, we AFFIRM the district court’s judgment.

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