To paraphrase Voltaire after he attended an orgy, once was an experiment, twice would be perverse.A bruised Donald Trump announced a new presidential bid on Tuesday night, an invitation to double down on the outrages and failures of the last several years that Republicans should reject without hesitation or doubt.To his credit, Trump killed off the Clinton dynasty in 2016, nominated and got confirmed three constitutionalist justices, reformed taxes, pushed deregulation, got control of the border, significantly degraded ISIS in Syria and Iraq, and cinched normalization deals between Israel and the Gulf states, among other things. These are achievements that...