Donald Trump can be an effective president, and he’s going to win with you or without you, Republican Chairman Reince Priebus told several hundred of the party’s top donors and strategists Saturday. Trump is setting a dangerous example for Americans by promoting “trickle-down racism,” and the party must look beyond this presidential election to find its future, the 2012 nominee Mitt Romney told the same group later that morning. Delivered within moments of each other at Romney’s annual business and politics summit at a five-star ski resort, those opposite messages were enough to cause whiplash. That’s a hazard of being...