Overview
- H.J. Res. 140 cleared the House on a narrow party-line vote and could reach the Senate floor as soon as Tuesday.
- The Department of the Interior imposed the 20-year withdrawal in 2023 after years of review and more than 675,000 public comments.
- Conservation groups and hunting‑angling advocates warn copper‑nickel sulfide mining at the headwaters threatens enduring water contamination in the Boundary Waters.
- Supporters, including Twin Metals and industry advocates, say the project would deliver hundreds of jobs, inject billions into the regional economy, and strengthen domestic mineral supply.
- The proposed mine would be developed by Chilean‑owned Twin Metals, and critics point to Reuters reporting that parent company Antofagasta was recently fined nearly $1 million in Chile for water‑management violations.