Conservatives now have yet another reason to revere Antonin Scalia: In death, he just may keep Donald Trump from becoming the GOP nominee. In every presidential election I can remember, both major parties have issued two warnings: This is the most important election of our lifetime. And it will decide the balance of the Supreme Court for decades to come. Now, that last part is finally, irrefutably true. And are Republicans really going to trust a guy who was pro-choice until a minute ago to appoint Scalia's successor? Will they pick someone who still speaks highly of Planned Parenthood to...