Senate Votes to End Moratorium on Boundary Waters Mining

Decision clears path for Twin Metals to extract metals in sensitive Minnesota watershed

Apr. 16, 2026 at 6:46pm

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A tranquil oil painting depicting a lone canoe floating on a still lake surrounded by forested shores, with warm sunlight and deep shadows creating a contemplative, nostalgic mood that evokes the natural splendor of the Boundary Waters region.The serene beauty of the Boundary Waters faces an uncertain future as the Senate votes to lift a moratorium on mining in the sensitive watershed.Washington Today

The U.S. Senate has voted to end a Biden-era moratorium on mining in the Boundary Waters Canoe Area Wilderness watershed, despite hours of impassioned arguments from Sen. Tina Smith. The move removes a major hurdle for Twin Metals, which has been seeking to extract nickel, copper, and other metals in the region.

Why it matters

The Boundary Waters is a sensitive ecological area in Minnesota that is highly valued for its natural beauty and recreational opportunities. The decision to allow mining in the watershed has raised concerns among environmentalists and local residents about potential damage to the delicate ecosystem.

The details

The Senate vote on Thursday overturned the moratorium that had been put in place by the Biden administration. Twin Metals, a mining company, has been fighting to gain access to the Boundary Waters area in order to extract valuable metals. Supporters of the mining project argue that it will bring economic benefits to the region, while opponents warn of the environmental risks.

  • The Senate vote took place on Thursday, April 16, 2026.
  • The Biden-era moratorium on mining in the Boundary Waters watershed was put in place prior to the Senate's decision.

The players

Sen. Tina Smith

A U.S. Senator from Minnesota who argued passionately against ending the moratorium on mining in the Boundary Waters.

Twin Metals

A mining company that has been seeking to extract nickel, copper, and other metals from the Boundary Waters watershed.

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What they’re saying

“If they want to go against the will of Minnesotans, then I am going to hold the Senate floor for hours to give them every opportunity to change their minds and do the right thing.”

— Sen. Tina Smith, U.S. Senator

What’s next

The decision to end the moratorium on mining in the Boundary Waters watershed now clears the way for Twin Metals to move forward with its plans, though the company will still need to obtain the necessary permits and approvals from federal and state regulators.

The takeaway

This vote highlights the ongoing tension between economic development and environmental protection in sensitive areas like the Boundary Waters. While supporters of the mining project argue it will bring jobs and economic benefits, opponents warn of the potential damage to the delicate ecosystem and the long-term consequences for the region's natural resources.