You are pretty clueless arn’t you? Could you find your ass with both hands and a map? Jury is out on that.
Guess what the auto manufacturers in Mexico and Canada largely are... Foreign parts of US based companies. Guess, just guess how this will be enforced. Violation... chunk out of parent companies hide. Same thing applies to the Japanese and German manufacturers. That is how you enforce it. Independent manufacturers in violation get tariffs. Easy peasy.
Go back to DU chicken little.
Ok so what govt agencies is going to enforce violations and what are the penalties? Why not a simple tariff?