Exactly two weeks ago, this author predicted the defeat of the American Health Care Act — and explained that it was a step towards the final, actual deal that will repeal and replace Obamacare. President Donald Trump faces three irreconcilable factions: the GOP establishment, conservatives, and Democrats. He must bring them together — to “deliver the goods,” a key rule in The Art of the Deal. But first he must show them “the downside” — and convince them they will fail on their own. The most difficult faction to deal with is the Republican establishment — not because they are...