Evidence suggests that people vary in their desire to undertake protective actions during a health emergency, and that trust in authorities may influence decision making. We sought to examine how the trust in health experts and trust in White House leadership during the COVID-19 pandemic impacts individuals' decisions to adopt recommended protective actions such as mask-wearing. A mediation analysis was conducted using cross-sectional U.S. survey data collected between March 27 and 30, 2020, to elucidate how individuals' trust in health experts and White House leadership, their perceptions of susceptibility and severity to COVID-19, and perceived benefits of protecting against COVID-19, influenced their uptake of recommended protective actions. Trust in health experts was associated with greater perceived severity of COVID-19 and benefits of taking action, which led to greater uptake of recommended actions. Trust in White House leadership was associated with lower perceived susceptibility to COVID-19 and was not associated with taking recommended actions. Having trust in health experts is a greater predictor of individuals' uptake of protective actions than having trust in White House leadership. Public health messaging should emphasize the severity of COVID-19 and the benefits of protecting oneself while ensuring consistency and transparency to regain trust in health experts.