Legislation that would renew the U.S. FDA’s user fee programs is stuck in process on Capitol Hill, a predicament that seems to resist resolution to date. FDA commissioner Robert Califf said on a July 12 webinar that the FDA “is a decision-making machine” that is reliant on both user fees and congressional appropriations, and that a failure on the part of Congress to act on user fee legislation may force the agency to halt new hires and possibly lay off some FDA staff.