My Bloomberg Opinion column is on what her recent comments tell us about the challenges of working for President Trump.

Nikki Haley, President Donald Trump’s former ambassador to the United Nations, has made news twice during her book tour. She has said that Trump should not be impeached “for asking for a favor that didn’t happen” and for holding up aid that was eventually delivered to Ukraine. And she has said that former administration officials Rex Tillerson and John Kelly asked her to join them in resisting the president from within. She says she rejected the idea because it would have meant subverting the Constitution.

In both cases, Haley disappointed opponents of Trump who had hoped, or imagined, that she was one of them. Her remarks show that she has thrown in her lot with the president. But there is a tension between her comments, and it mirrors the tension of working in this administration. . . .