US Agriculture Secretary Tom Vilsack
US Agriculture Secretary Tom Vilsack said on Wednesday he is waiting for a legal opinion before deciding whether to approve Minnesota's Twin Metals copper mining project, which labor unions support but environmentalist strongly oppose.
"We continue to wait for the Department of the Interior. They have to issue a legal opinion before we know what direction we need to take" at the Agriculture Department, Vilsack told a White House news conference.
The US Forest Service, part of the Agriculture Department, controls the surface land at the site. The US Bureau of Land Management, part of the Interior Department, controls the underground copper deposit and must approve plans to extract minerals.
Interior Secretary Deb Haaland declined to discuss the project when asked at a congressional hearing earlier this year by US Representative Pete Stauber, a Minnesota Republican whose district includes the mine site.
The proposed underground mine would, if built, be a major US copper supplier as President Joe Biden aims to build more electric vehicles, which use twice as much of the red metal as those with internal combustion engines. But opponents fear the project would permanently mar the Boundary Waters Canoe Area Wilderness on the US-Canada border.
Twin Metals has said the project can be constructed safely and in a way that boosts the region's economy.
Vilsack had blocked the Twin Metals project when he served as agriculture secretary under President Barack Obama, only to see that decision reversed by President Donald Trump's administration.
Vilsack in June said that as part of his deliberations he was trying to balance environmental concerns and economic potential.
Representatives for Twin Metals, which is controlled by Chile's Antofagasta, were not immediately available to comment.
Vilsack has the power to block mining in the region for 20 years, though a bill introduced in the US Congress earlier this year could permanently ban it.