Check your memory. Bush II did exactly the same thing with sheet steel. Rather than protect steelworker jobs, the result was that appliance manufacturers left the US for Asia.
Bush II anti-free trade was a major reason for the loss of manufacturing jobs in the Rust Belt. Once gone, they are hard to get back, even when the mistake is eventually corrected.
He did that for a year and this was the result
“o Since then, steel prices have stabilized, imports are at their lowest level in years, and U.S. steel exports are at record levels.
The President’s determination was based on significant improvements in the U.S. steel industry and other changed circumstances since last year, including:
o Industry consolidation and restructuring that have reduced production costs and increased productivity;
o New labor agreements that increase flexibility, boost productivity, protect retiree welfare, and empower steel workers; and
o An improving economy that will create new opportunities for America’s steel industry.”