Many jobs have come with increased stress levels during the coronavirus pandemic, from ICU staff to Walmart greeters. Now officials who’ve been keeping tabs on FDA commissioner Dr. Stephen Hahn are wondering whether he can weather the strain of defending science while working for the Trump administration.

Hahn has been squeezed between expressing his professional opinions and toeing the administration line on topics such as hydroxychloroquine and COVID-19 vaccines. (Hydroxychloroquine may cause a heart rhythm disorder or drug-induced sudden cardiac death, according to the Centers for Disease Control and Prevention (CDC).) He has gamely fielded questions raised about statements made by President Trump — including on whether the coronavirus is deadly and the possibility of a vaccine being will be ready by Election Day, November 3, 2020.

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