Mr. Davis said that for him, the matter is personal. “I grew up and still live in the shadow of U.S. Steel plants,” he said. “I went to high school with people who work at the Mon Valley Works. I know ...

“They were going to invest in the Valley,” said Jason Zugai, an operating technician and vice president of the United Steelworkers union local at a U.S. Steel plant in the Mon Valley.

When the Biden administration’s energy efficiency regulation for distribution transformers threatened to shutter a Cleveland Cliffs plant in ... a plan to expand Mon Valley Works.

When the Biden administration's energy efficiency regulation for distribution transformers threatened to shutter a Cleveland Cliffs plant in Butler County ... were slow to approve a plan to expand Mon ...