Can a president defy an unconstitutional Supreme Court ruling? Dr. Ben Carson, to his everlasting credit, has raised the issue of whether or not a president can refuse to enforce an unconstitutional ruling of the Supreme Court. In my opinion, and speaking just for myself, the answer to this question is, “Of course.” In fact, when circumstances require it, it may be that he must, or he will be false to his oath of office. Such presidential courage may in the end be the only way to preserve our constitutional republic. No president...