From the letter:
Dear Senator Schumer and Representative Pelosi, Representatives Grijalva and Cantwell:
The undersigned groups strongly oppose a rider or similar legislation that would mandate the exchange of 6,650 acres of irreplaceable Superior National Forest lands to PolyMet Mining Inc. for a proposed open pit copper-nickel sulfide ore mine.
A “PolyMet Rider” has been proposed for the PolyMet sulfide ore mine, which is deeply controversial and poses a threat to water quality, exceptional wetlands, endangered species, and Treaty-reserved rights and resources. Recent polling shows that a majority of Minnesotans are opposed to the proposal. On November 28, 2017, H.R. 3115, a measure to compel the PolyMet land exchange, passed the House of Representatives, in a divided vote and has been referred to the Senate Committee on Agriculture, Nutrition and Forestry. No standalone companion Senate bill to H.R. 3115 has been introduced.