Tribal representatives from across the Northwest are flying into Washington, D.C. this week to discuss how mine waste in British Columbia is threatening their way of life. With plans in the Canadian province for doubling the number of mines, tribes say waste already affects waterways downstream in the U.S. Richard Janssen Jr. is the Department Head of Natural Resources for the Confederated Salish and Kootenai Tribes, and is in D.C. this week. He said selenium waste from mines near the Elk River north of Montana has a detrimental effect on waterways.