Since the passing of Supreme Court Justice Antonin Scalia, the GOP presidential field has, in a rare show of unity, supported Senate Majority Leader Mitch McConnell's statement that Scalia's replacement should be determined by the results of the November election. Democratic hypocrites like Sen. Chuck Schumer accuse the GOP of obstructionism, the memory of their blocking of George W. Bush nominees having faded. They, while insisting that President Obama has the Constitutional right to nominate a replacement, which he does, forget the Senate's Constitutional role to advise and consent -- or not consent. They can say no -- or even...