Under mounting pressure, U.S. Rep. Paul Ryan emerged as the reluctant would-be savior of the fractious Republican House caucus yesterday, even being urged by 2012 GOP ticket-mate Mitt Romney to run for speaker. “I wouldn’t presume to tell Paul what to do, but I do know that he is a man of ideas who is driven to see them applied for the public good,” Romney said in a statement yesterday. “Every politician tries to convince people that they are that kind of leader; almost none are — Paul is.” Romney’s glowing endorsement of his former running mate came after the...