Is Donald Trump the sharia of American politics? I'm having trouble finding much daylight between Islamic law's repressive blasphemy standards and the mogul's thin-skinned sense of privilege. None of us wants to be insulted or smeared. But sharia forbids not only ridicule or slander against Islam; it bans any examination that casts Islam in an unflattering light. Worse, truth is not a defense: Even if one's questions are based on undeniable past actions or verbatim quotes from scripture, tough questioning is considered blasphemous. Retribution, moreover, is often completely out of proportion to the scale of the perceived "offense." How is...