![Matthew Brown Montana Republican Gov. Greg Gianforte, left, and Republican Sen. Steve Daines listen to a Westmoreland Mining representative during a tour of the company's Rosebud mine in southeastern Montana, Tuesday, May 28, 2024, in Colstrip, Montana. Coal use has been declining in the U.S. for more than a decade. ( (AP Photo/Matthew Brown)](https://mapi.associatedpress.com/v2/items/f67b7648706d48fbbd041d1d30fa8514/preview/preview.jpg?s=680x)
Montana Republican Gov. Greg Gianforte, left, and Republican Sen. Steve Daines listen to a Westmoreland Mining representative during a tour of the company's Rosebud mine in southeastern Montana, Tuesday, May 28, 2024, in Colstrip, Montana. Coal use has been declining in the U.S. for more than a decade. ( (AP Photo/Matthew Brown)
![Larry Mayer A mechanical shovel is seen being used for reclamation activity in an area that had been mined for coal at the Rosebud Mine, Tuesday, May 28, 2024, in Colstrip, Mont. The mine serves a nearby power plant that's become a political flashpoint ahead of the 2024 election after the Biden administration finalized new pollution rules for coal plants. (Larry Mayer/The Billings Gazette via AP)](https://mapi.associatedpress.com/v2/items/c6f226d8bb704c69a73d80136986200e/preview/preview.jpg?s=680x)
A mechanical shovel is seen being used for reclamation activity in an area that had been mined for coal at the Rosebud Mine, Tuesday, May 28, 2024, in Colstrip, Mont. The mine serves a nearby power plant that's become a political flashpoint ahead of the 2024 election after the Biden administration finalized new pollution rules for coal plants. (Larry Mayer/The Billings Gazette via AP)
![Matthew Brown Republican Sen. Steve Daines speaks with a worker at Westmoreland Mining's Rosebud coal mine Tuesday, May 28, 2024, in Colstrip, Mont. Daines and other Republicans are pushing back against new restrictions against coal-burning power plants and coal leases on federal lands from the Biden administration. (AP Photo/Matthew Brown)](https://mapi.associatedpress.com/v2/items/30538f4223874166b069d7f9d5162810/preview/preview.jpg?s=680x)
Republican Sen. Steve Daines speaks with a worker at Westmoreland Mining's Rosebud coal mine Tuesday, May 28, 2024, in Colstrip, Mont. Daines and other Republicans are pushing back against new restrictions against coal-burning power plants and coal leases on federal lands from the Biden administration. (AP Photo/Matthew Brown)
![Matthew Brown The coal-fired Colstrip Generating Station is seen behind youths playing baseball on Tuesday, May 28, 2024, in Colstrip, Mont. Republicans and some Democrats are pushing back against the Biden administration's plans to curb coal pollution and end new mining leases for the fuel in the Powder River Basin of Montana and Wyoming. (AP Photo/Matthew Brown)](https://mapi.associatedpress.com/v2/items/f9765e2584fa4e25b65e25852aa09c53/preview/preview.jpg?s=680x)
The coal-fired Colstrip Generating Station is seen behind youths playing baseball on Tuesday, May 28, 2024, in Colstrip, Mont. Republicans and some Democrats are pushing back against the Biden administration's plans to curb coal pollution and end new mining leases for the fuel in the Powder River Basin of Montana and Wyoming. (AP Photo/Matthew Brown)
![Matthew Brown Ken Wooley with Westmoreland Mining, right, speaks with Republican Sen. Steve Daines, center and Montana Republican Gov. Greg Gianforte as they stand in a piece of heavy equipment at the Rosebud coal mine, Tuesday, May 28, 2024, in Colstrip, Mont. (AP Photo/Matthew Brown)](https://mapi.associatedpress.com/v2/items/aa399b87f18e46dea80be151cde9d4f5/preview/preview.jpg?s=680x)
Ken Wooley with Westmoreland Mining, right, speaks with Republican Sen. Steve Daines, center and Montana Republican Gov. Greg Gianforte as they stand in a piece of heavy equipment at the Rosebud coal mine, Tuesday, May 28, 2024, in Colstrip, Mont. (AP Photo/Matthew Brown)
![Matthew Brown The coal-fired Colstrip Generating Station is seen behind youths playing baseball on Tuesday, May 28, 2024, in Colstrip, Mont. The EPA says the plant is the highest emitter of toxic metal pollutants in the nation. (AP Photo/Matthew Brown)](https://mapi.associatedpress.com/v2/items/add5212db356441d866ddae454143360/preview/preview.jpg?s=680x)
The coal-fired Colstrip Generating Station is seen behind youths playing baseball on Tuesday, May 28, 2024, in Colstrip, Mont. The EPA says the plant is the highest emitter of toxic metal pollutants in the nation. (AP Photo/Matthew Brown)
![Matthew Brown Montana Republican Gov. Greg Gianforte, right, talks about Biden administration policies impacting the coal industry as Republican Sen. Steve Daines, center, and NorthWestern Energy President Brian Bird look on during a roundtable meeting with coal executives and local officials at the Rosebud mine, on Tuesday, May 28, 2024, in Colstrip, Mont. Gianforte said electricity prices could go up because of the Democratic administration's policies. (AP Photo/Matthew Brown)](https://mapi.associatedpress.com/v2/items/a20315dab6264043b1b3f2fe7da4d330/preview/preview.jpg?s=680x)
Montana Republican Gov. Greg Gianforte, right, talks about Biden administration policies impacting the coal industry as Republican Sen. Steve Daines, center, and NorthWestern Energy President Brian Bird look on during a roundtable meeting with coal executives and local officials at the Rosebud mine, on Tuesday, May 28, 2024, in Colstrip, Mont. Gianforte said electricity prices could go up because of the Democratic administration's policies. (AP Photo/Matthew Brown)