Walmart Feds Sue Walmart Over Role In Opioid Crisis By Associated Press • Dec 22, 2020 AP Photo/Julio Cortez, File Updated 12/22/20, 1:06 p.m. WASHINGTON — The Justice Department sued Walmart on Tuesday, accusing it of fueling the nation's opioid crisis by pressuring its pharmacies to fill even potentially suspicious prescriptions for the powerful painkillers.