The Trump administration asks much of its staffers: silence, loyalty, and the ability to stone-facedly defend Donald Trump’s ravings before the public. When it comes to its Cabinet officials, another requirement applies: that they be diametrically opposed to the agency they have been tapped to run.

Climate-change skeptic Scott Pruitt believes his job as Environmental Protection Agency administrator is to make it easier for people to treat the environment like a toilet bowl. Secretary of Education Betsy DeVos seemingly believes public schools are a scourge on society. Consumer Financial Protection Bureau chief Mick Mulvaney is taking down the agency from the inside. So naturally Brenda Fitzgerald, Trump’s top health official, thought it was completely reasonable to trade tobacco stocks while working as the director of the Centers for Disease Control and Prevention, the very agency tasked with reducing tobacco use.

According to Politico, Fitzgerald, who announced her resignation Tuesday morning, purchased “tens of thousands of dollars” in stocks in the months after assuming her leadership roll at the C.D.C. They reportedly included purchases of Merck & Co., Bayer, health-insurer Humana, and US Food Holding Co., as well as shares of Japan Tobacco worth between $1,001 and $15,000. The day after investing in Japan Tobacco, Fitzgerald toured the C.D.C.’s Tobacco Laboratory, which “researches how the chemicals in tobacco harm human health.” Before taking over at the C.D.C., Fitzgerald—who has called tobacco cessation one of her top priorities—reportedly owned stock in five other tobacco companies.

Fitzgerald’s investment was technically legal, but Richard Painter George W. Bush’s ethics lawyer from 2005 to 2007, told Politico that the move was “tone deaf” and that it “stinks to high heaven,” given the C.D.C.’s commitment to anti-smoking efforts. “You don’t buy tobacco stocks when you are the head of the C.D.C.,” he added. “It’s ridiculous; it gives a terrible appearance.”

Fitzgerald, of course, isn’t even the first Trump official who’s apparently seen no issue with investing in stocks whose share prices could be impacted by her government job. Former Health and Human Services Secretary Tom Price got in trouble last year for his questionable purchases of health-care stocks while serving in Congress. (Price defended himself at a hearing last January, telling lawmakers, “Everything that we have done has been above-board, transparent, ethical, and legal.”) Ultimately, the Trump administration brushed off Price’s hypothetical foray into insider trading; it was only after it came to light that Price spent hundreds of thousands of dollars flying private when a commercial flight (or a car or a train) would have sufficed that he was forced to resign.