Article Photos: Oklahoma's two new congressmen begin service in House

Rep. James Lankford, left, delivers a ceremonial oath of office on Capitol Hill on Thursday to new Rep. Markwayne Mullin, who was accompanied by his family. <strong>Chris Casteel - The Oklahoman</strong>

Rep. James Lankford, left, delivers a ceremonial oath of office on Capitol Hill on Thursday to new Rep. Markwayne Mullin, who was accompanied by his family. Chris Casteel - The Oklahoman