In this file photo taken Jan. 13, 2015, marijuana plants sit under powerful lamps in a growing facility in Arlington, Wash.
In this file photo taken Jan. 13, 2015, marijuana plants sit under powerful lamps in a growing facility in Arlington, Wash. Elaine Thompson AP
In this file photo taken Jan. 13, 2015, marijuana plants sit under powerful lamps in a growing facility in Arlington, Wash. Elaine Thompson AP