Kernrechtsfrage
Whether the complaint in public law matters was admissible against the cantonal decision on tax collection and solidarity liability.
Extrahierter Entscheid
The complaint was admissible; the matter concerned public law, the cantonal decision was final for tax collection, and the transitional federal rules allowed direct access to the Federal Court.
Extrahierte Begründung
A challenge to the application of cantonal tax law on federal constitutional grounds does not preclude the ordinary public-law complaint; the cantonal tax authority acted as last instance in collection matters.