Facts
The applicant, a single German national, entered Switzerland in 1964 with a trainee permit. After the expiration of this permit, she was issued an ordinary residence permit valid until 31 March 1967. In October 1966, the authorities learned that the applicant had been engaged in an adulterous relationship with a married German national domiciled in Schaffhouse since late October 1964. Based on Art. 9(2)(b) of the Federal Act on Foreign Nationals' Stay and Residence (RSFNA), the Zurich Cantonal Aliens Police revoked her residence permit on 8 November 1966 due to conduct that disrupted marriage and was contrary to morals. The applicant appealed this decision, but the appeal was dismissed by the State Council on 19 January 1967. The applicant then filed a public law appeal for a violation of Art. 4 Cst.Considerations
The Federal Tribunal considers that a foreign national has standing to challenge the revocation of their residence permit by way of a public law appeal, insofar as it infringes their constitutional rights. According to Art. 9(2)(b) RSFNA, the residence permit may be revoked if the foreign national's conduct "gives rise to serious complaints". This concept refers to conduct that infringes the public order and morals of the host country, beyond the mere private sphere. In the present case,…