In recent days and weeks there has been renewed speculation that Mitt Romney, the 2012 Republican nominee for president will again be a candidate in 2016. There has been some talk about this for months, but it has grown louder in recent days. Yesterday, The Washington Post described Mr. Romney’s evolving potential candidacy as “The road from ‘I’m not doing it again’ to ‘Circumstances can change’ is paved with favorable polls, 2012 predictions that came true and public statements from supporters.” Last week in an article titled “Romney 2016 is Real,” The Washington Examiner wrote “Romney is talking with advisers,...