(Reuters) - A U.S. judge on Monday refused to dismiss a lawsuit by Republican lawmakers who accuse Attorney General Eric Holder of wrongfully withholding documents tied to an investigation into a botched probe of gun trafficking on the U.S.-Mexican border. "Neither legal nor prudential considerations support the dismissal of this action," District Court Judge Amy Berman Jackson wrote in a ruling rejecting the Department of Justice's request to dismiss the lawsuit in federal court in Washington. The Republican-led House Committee on Oversight and Government Reform sued Holder in August 2012, seeking to enforce its subpoena connected to the gun trafficking...