 Rep. Clarke also introduced the first federal legislation to "Ban the Box," which would prohibit unfair discrimination against job applicants with certain criminal backgrounds.Clarke was a member of the Congressional Black Caucus, Congressional Asian Pacific American Caucus, and the Congressional Progressive Caucus.Clarke defeated seven-term incumbent U.S. Rep. Carolyn Cheeks Kilpatrick in the Democratic primary for Michigan's 13th District—the real contest in this heavily Democratic, black-majority district—in Aug. 3, 2010.