International Commission Asks Canada to Join Probe of Selenium Flowing From BC

A fly fisherman casts on the Kootenai River, downstream of the Koocanusa Reservoir, near the Montana-Idaho boundary and Leonia, Idaho, on Sept. 19, 2014. The Canadian Press/AP/The Spokesman Review, Rich Landers

The agency that mediates disputes between Canada and the United States over shared waters is pleading with the federal Liberals to join an investigation into contamination from British Columbia coal mines.

The International Joint Commission has written Prime Minister Justin Trudeau to collaborate before the Americans move on their own.