Quote of note:

During the detentions, border agents confiscated cell phones when they learned that those being held were attempting to contact lawyers or the media,  the suit charges.

Religious Profiling Sparks Federal Lawsuit
William Fisher

NEW YORK, Apr 20 (IPS) - Three influential civil rights groups charged Wednesday that border control tactics used by the Department of Homeland Security discriminate against U.S. citizens solely on the basis of their religion and ethnicity, in violation of the U.S. Constitution.

In simultaneous news conferences held in New York City and Buffalo, on the Canadian border, the Council on American-Islamic Relations (CAIR), the New York Civil Liberties Union and the American Civil Liberties Union announced that they were suing the head of the Department of Homeland Security over the practice of targeting U.S. citizens participating in religious conferences outside the United States.

The lawsuit was filed in U.S. district court on behalf of five Muslim-Americans who, along with dozens of others, were detained for six and a half hours, interrogated, fingerprinted, and photographed at the Canadian border crossing to Buffalo as they returned home from an annual Islamic conference in Toronto.