The GOP controls the house and senate. Congress controls tariffs. If they followed the law congress could make the thing happen. But I don't think think independent thinking is allowed in the GOP, and it might force their hand if they had to actually put it to a vote ...
I hope this judgement stands, however, trade actually works out really well for the US economy and its job market. Yes, we don't often manufacture the thing, but we have huge roles in designing those things and packing them with software. Even China is trying to get in on that while they offload manufacturing to robots and countries that are earlier on in their development.