Questione giuridica chiave
Whether the 2012 refund assessment for child-allowance supplements could be made anew despite a final 2008 refund judgment.
Decisione estratta
The supplements were already included in the final 2008 refund amount; the administration could not reassess them anew, but had to enforce the final claim by debt-collection means.
Motivazione estratta
Once a refund claim has been validly and timely asserted, later correction or repeal of the assessment does not affect the preserved limitation for assessment; after finality, the issue is enforcement. Revising the amount by a new administrative decision would unlawfully interfere with the res judicata effect of the 2011 federal judgment.