A federal judge sharply criticized prosecutors during a White House gunman hearing in Washington, D.C., after they attempted to continue arguing for pretrial detention even though the accused man agreed to remain in custody. The case involves 31-year-old Cole Allen, who is accused of attempting to attack the White House Correspondents’ Dinner. He faces serious federal charges, including attempted assassination of the president and weapons-related offenses. He has not yet entered a plea. The White House gunman…