There’s a reason Republicans have been rushing to try and defund the Affordable Care Act before October 1, when major sections of the law take effect. Republicans know what polls show — that most Americans don’t know what’s in ObamaCare, but when told what the law actually includes, a strong majority support the law. Once state health insurance exchanges take effect, and premiums for all Americans go down, Republicans know the law will only become more popular and harder to repeal. As Republican Senate Minority Leader Mitch McConnell said, “It's a lot harder to undo something than it is to...