Kernrechtsfrage
Whether the constitutional complaint could challenge alleged misapplication of federal family-law and procedural rules.
Extrahierter Entscheid
Those complaints were inadmissible because they concerned federal law or procedural law that had to be raised by appeal, not by constitutional complaint.
Extrahierte Begründung
The constitutional complaint is subsidiary; it cannot be used to attack merely incorrect application of federal law, and procedural-law complaints belong in the appeal route.