AdvertisementD.C. lawmakers pass a bill that would ban firing employees for failed marijuana testsJune 08, 2022Ayana ArchiefacebookEmailIn this April 12, 2018, photo, a marijuana plant awaits transplanting at the Hollingsworth Cannabis Company near Shelton, Wash. Thirty states have legalized some form of medical marijuana, according to a national advocacy group. Nine of those states and Washington, D.C., also have broad legalization where adults 21 and older can use pot for any reason. (AP)