Key legal question
Whether the public law appeal could challenge the cantonal court's factual findings and proof assessment
Extracted holding
The appeal could invoke constitutional and procedural defects and arbitrariness in fact-finding, but not the federal fraud element of astute deception, which belonged in cassation.
Extracted reasoning
The Federal Court distinguished between constitutional/arbitrariness review, admissible on public law appeal, and objections to the substantive federal criminal law elements, which were inadmissible in this procedure.