WASHINGTON (AP) — Food and Drug Administration Commissioner Scott Gottlieb is stepping down after nearly two years leading the agency's response to a host of public health challenges, including the opioid epidemic, rising drug prices and underage vaping. Health and Human Services Secretary Alex Azar announced in a statement Tuesday that Gottlieb would leave in a month. President Donald Trump tapped Gottlieb in 2017 to "cut red tape" at the FDA.