If the principle of noninterference with the wheels of justice holds for a president as a broad, general matter, it is a hundred times more important that he not weigh in on anything that affects him personally. Today we have a president who is willing not only to comment prejudicially on a criminal prosecution but to comment on one that potentially affects himself. He does both of these things almost daily—and directly and repeatedly—to millions of followers on Twitter and viewers on television. He is not just sounding a dog whistle, weighing in with a glancing suggestion that can be
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