In several recent cases, German authorities have used measures passed after the Sept. 11, 2001, attacks in the United States to order the deportation of foreign nationals deemed to be dangerous, even where there is no proof they committed a serious offense.
The Federal Constitutional Court said today it has thrown out a complaint by the man, whom it didn't identify, against a decision in March by the state government in Bremen to deport him to Algeria. He first entered Germany in 2003.