Can’t tariff Germany’s factory- how would you even go about legislating that? The way to go about it so to start mandating that all cars have rain sensors, or

Can’t tariff Germany’s factory- how would you even go about legislating that? The way to go about it so to start mandating that all cars have rain sensors, or dashboard instruments or HUD, or radar if they do TACC or parking sensors - things that most other cars have, but would be a pain for Tesla to add back in for just one region