In August 2020, Miller was appointed as Assistant Commissioner for Media Affairs for the Food and Drug Administration, including being the FDA's top spokesperson, a role usually performed by non-political civil servants. Two weeks later, she was dismissed from the position abruptly after FDA director Stephen Hahn made an embarrassing error at a White House news conference and then sought to point the blame elsewhere. "Within a week Hahn had relieved Wagner and Miller of their responsibilities, making it appear that Hahn was reclaiming his agency from West Wing infiltration. But that was only partly true," Vanity Fair reported, saying Miller and Wagner "were nonetheless scapegoated, according to several people familiar with the events. 'He threw Miller under the bus,' one senior HHS official told Vanity Fair." Hahn said he continues to view Miller as “really good at what she does.”