Question juridique clé
Whether the constitutional complaint was barred by subsidiarity because the same arguments could be raised by federal appeal.
Solution extraite
The complaint was admissible only for genuine constitutional grievances; arguments amounting merely to federal-law errors were inadmissible.
Motifs extraits
Because the appellants also raised arbitrariness and denial of proof, the Court dealt with the constitutional complaint first, but repeated that pure federal-law objections must be pursued by appeal, not constitutional complaint.