I am often asked why I, a Christian libertarian and intellectual, would publicly support Donald Trump, a man of no fixed ideology, no apparent religious beliefs, multiple marriages, visible ties to the Clintons, and whose taste and sophistication tends to resemble that of a nouveau riche rhinoceros. It is a reasonable question. After all, how can anyone support a candidate whose public statements are, to put it mildly, inconsistent—when they are not completely self-contradictory. The answer is as simple as it is conclusive and convincing. Donald Trump is the only candidate in either major party whose personal interests are aligned...