Except trade deals and regulations are negotiated/implemented top down. So the EU has teeth if the US pushed it too far. It's hard to get the EU to agree on a

Except trade deals and regulations are negotiated/implemented top down. So the EU has teeth if the US pushed it too far. It's hard to get the EU to agree on a lot of things but something sufficient to make the EU consider punishing the US would likely be important enough they would agree.