MISSION, Ore. (AP) — The Confederated Tribes of the Umatilla Indian Reservation have removed a tribal housing barrier. The East Oregonian reports the Tribes announced this week they amended their housing department’s drug elimination policy to allow tribal members to test positive for marijuana during the application process. The news release said cannabis is still illegal on the reservation, but changing the policy was an acknowledgment that marijuana was legal to consume in Oregon and Washington. Officials say the policy also recognizes that THC, one of the active ingredients in cannabis, can stay in a person’s system for weeks or longer.