Kernrechtsfrage
Whether the refusal to renew the residence permit was lawful despite the statutory entitlement of a foreign spouse of a Swiss citizen.
Extrahierter Entscheid
The entitlement existed in principle, but it lapsed because the applicant had a deportation ground against him under the Aliens Act.
Extrahierte Begründung
A serious criminal conviction for a crime constitutes a deportation ground; the refusal of renewal must also satisfy proportionality review under the same criteria as deportation, including seriousness of fault, length of stay, and family hardship.