Every few months, Republicans behave stupidly, causing their voters to again ask themselves, "Why vote Republican?" Supporting congressional Republicans seems an exercise in futility – Lucy holding the football for Charlie Brown, ready to kick a conservative field goal, only to have Lucy pull the football away at the last second. I have asked this question several times on these pages. We all know the words to the Republican song we have heard every two years for the past decade. The first verse was written in 2010, when Republicans claimed they needed to win the House so they could repeal...