Gary Steel Mills Reel from Trump's 25% Tariff Spike

GARY, Ind. — Steel producers in Northwest Indiana, a cornerstone of the state's manufacturing economy, are grappling with skyrocketing costs following President Donald Trump's March 12, 2025, reimposition of 25% tariffs on imported steel and aluminum. Mills in Gary and East Chicago, including operations by Cleveland-Cliffs Inc. and U.S. Steel Corp., face immediate pressure as Midwest aluminum premiums hit 45 cents per pound — a 70% surge since January — while domestic steel prices jumped 15% post-announcement. Industry leaders warn these hikes, mirroring 2018 patterns, will squeeze supply chains for automotive and construction sectors vital to Indiana's 300,000 manufacturing jobs.

The tariffs, intended to shield domestic producers from cheap imports from China, Mexico and Canada, have instead prompted U.S. mills to raise prices amid heightened demand and constrained supply. Steel Dynamics Inc., based in Fort Wayne, echoed optimism in past cycles but now contends with tightened inventories; CEO Mark Millett noted in prior earnings calls that maintenance outages keep supply 'absolutely tight.' In Gary, home to Cleveland-Cliffs' Indiana Harbor works — one of the nation's largest integrated steelmakers — executives report rerouting imports and boosting local sourcing, yet costs for raw materials like iron ore from Great Lakes mines remain volatile due to the region's ore-steel synergy.

Local economic stakes are high: Northwest Indiana's steel cluster supports 20,000 direct jobs and billions in output, but tariffs could add $3,000 to $10,000 per vehicle for suppliers feeding Indiana's auto plants in Fort Wayne and Lafayette. Companies near Lake Michigan ports, key for steel inflows, absorb the sharpest hits, with Boston Consulting Group forecasting retaliatory global tariffs and supply disruptions. As of May 2026, Gary leaders like those at the Northwest Indiana Forum urge federal relief, fearing slowed infrastructure projects tied to the state's $1.5 billion roads plan.