A little-known Republican congressman from Nebraska will begin a high-profile trial Wednesday in California over accusations by federal prosecutors that he lied about illegal campaign contributions from a Nigerian billionaire. The trial of U.S. Rep. Jeff Fortenberry in Los Angeles will be the first of a sitting member of Congress in 21 years and could all but end the political career of a congressman seen as a reliable conservative who coasted to easy wins but isn't a familiar name outside of Nebraska.