Matt Miller, Washington Post
What to make of a Republican Party that celebrates upward mobility but does nothing to promote it - despite the stunning fact that it is now less likely that an American child will rise from the station of his or her birth than children in most of Europe? Call it the Rubio Paradox — for Sen. Marco Rubio of Florida, a sure contender for the national ticket someday after his performance last week in Tampa, and the most eloquent current exemplar of this American creed.The striking thing about the Republican National Convention was how all of the most powerful speeches invoked tales of...