Paul Gregory King is a retired American analytical chemist who currently works at the Coalition for Mercury Free Drugs along with the father and son duo of Mark Geier and David Geier, the organization's vice president and treasurer, respectively. King is the organization's secretary. Stephen Barrett has noted that while CoMeD has repeatedly filed petitions to the FDA in an effort to get them to ban thimerosal in vaccines, they have not been successful, with the FDA finding in 2006 that its conclusions were legally and scientifically unsupportable.