ATLANTA -- Sen. Rand Paul (R-Ky.) avoided the RedState Gathering this weekend. While Republican presidential rivals like Sen. Ted Cruz (R-Tex.) and former Arkansas governor Mike Huckabee faced down questions about Donald Trump in Atlanta, Paul was touring South Carolina, holding meet-and-greets and dropping into a "Pints for Liberty" happy hour. But in Goose Creek, S.C., Paul unloaded on Trump, recapitulating the arguments he'd made throughout Thursday night's presidential debate, saying conservatives were "kidding themselves" if they fell for Trump's brand of anti-establishment politics. "I can't imagine Donald Trump even knowing what a tea party is," Paul said, referring to...