Trump’s Canada feud breathes life into DOE-backed mine

By Hannah Northey | 03/25/2026 01:17 PM EDT

Potash, a largely imported, crystal-like material, is used to make fertilizer and potassium-ion batteries for the grid, EVs and electronics.

Ward Forquer stands next to his white truck with a license plate that says "POTASH"

Ward Forquer with the Michigan Potash & Salt Co., stands at the site of a proposed potash mine in Osceola County near the town of Evart. Hannah Northey/POLITICO's E&E News

EVART TOWNSHIP, Michigan — Ward Forquer, a second-generation fertilizer salesman, envisions a massive revival for his struggling industry in this rural swath of the state.

He thinks President Donald Trump and Democratic Gov. Gretchen Whitmer’s backing of a new potash mine here can make it happen.

The project has gained a foothold amid Trump’s threats to slap tariffs on Canada, which provides about 88 percent of U.S. potash, a key ingredient in most agricultural fertilizers recently deemed a critical mineral. The mine, in Michigan Republican Rep. John Moolenaar’s district, has also nabbed a conditional $1.3 billion federal loan guarantee. Most potash has thus far enjoyed an exemption from Trump’s tariffs on Canadian products.

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But there’s a catch.

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