Child Support Obligation Despite Custodial Parent's Expulsion

The case concerns a father who sought a reduction of court-ordered child support payments for his son after the child's mother, with whom the son resided, was lawfully expelled from the country, despite the existence of a prior support agreement. The court affirmed the lower court's decision to reject the reduction request, reasoning that under Swiss constitutional law (Art. 11 BV) and the Civil Code (Art. 276 ZGB), a child residing in Switzerland is entitled to maintenance regardless of the alien law status or residence permit of the custodial parent, prioritizing the child's welfare as a fundamental constitutional right.