Questione giuridica chiave
Whether the appeal against refusal to renew the residence permit was sufficiently reasoned under Art. 42 BGG.
Decisione estratta
No. The appeal did not engage with the key finding of abuse of rights and therefore failed the minimum reasoning requirements.
Motivazione estratta
The cantonal authorities relied on abuse of rights, not on a sham marriage. The appellant only insisted that there was no sham marriage and did not address the abuse-of-rights reasoning.