Questione giuridica chiave
Whether the late-filed migration documents were admissible as new evidence on federal appeal.
Decisione estratta
The documents were inadmissible novelties because they could have been filed in the cantonal proceedings.
Motivazione estratta
Under Art. 99(1) BGG, evidence is admissible only if the lower-court decision itself gives rise to it; that was not the case here.