A company that sells a new opioid-addiction medication is a secret funder of an advocacy group fronted by Newt Gingrich and Patrick Kennedy that is pushing for more government funding and insurance coverage of such treatments.

Gingrich, the former Republican House speaker and a Trump confidant, and Kennedy, a former congressman and son of former US Senator Edward Kennedy, are paid advisors to Advocates for Opioid Recovery. They have generated a flurry of media attention in those roles, including joint interviews with outlets ranging from Fox News to the New Yorker.