I think any tariff that passes will have a swiss cheese of exemptions, because that’s just how the game is played in Congress.
Lobby hard enough and you’ll get your country excused one way or another.
Canada being the biggest trade partner would be prime for these.
It would be prime for Canadian ports, and for a host of middle men who get to launder trade goods through a legal loophole.
But that’s the real end game. Not domesticating manufacturing, but monopolizing channels for import/export.
Given the degree of US sanctioning on Russia, I’m not clear what a “Russian owned US Steel Mill” is even supposed to look like.
I remember Japanese Manufacturer Nippon Steel is moving towards full acquisition of US Steel, the largest steel maker in the country. That has, at least in part, been driven by the threat of US tariffs. But this only further illustrates the problem. Foreign mega-corps gobbling up domestic industry do nothing to improve the US economy.