Alaska's Bristol Bay is home to one of the most valuable salmon fisheries in the world. It's also a place where a company has been wanting to build an open-pit copper and gold mine for years. The Obama-era EPA proposed limits for Pebble Mine to protect waters in the region. The EPA under President Donald Trump considered rolling those proposed restrictions back but then suspended the process, leaving the proposed restrictions on the table as the mine moves into the permitting process. Complicating matters, the Alaska Native people who live there are divided on whether the mine should go ahead. https://www.alaskawaterwars.org