A federal judge has ruled that a Missouri college's requirement that all of its students undergo drug testing is unconstitutional. The American Civil Liberties Union says in a news release that the judge ordered Linn State Technical College in Linn, Mo., to end the drug-testing program. The ACLU says Linn State, a two-year college with about 1,200 students, required every incoming student to be tested for drugs, even though many of them would not be engaged in dangerous activities, and the college had no reason to believe any particular student was using drugs.