Gli alleati degli Stati Uniti, tra cui Regno Unito, UE e Giappone, sono i più colpiti dopo che la Corte Suprema si è pronunciata contro le precedenti imposte

Sadly pay walled.

But as far as I understood, Neither US or EU have ratified the renewed deal.
EU postponed it over Greenland and now with the new ruling they’re considering halting the process tout court.

On the US end the renewed deal has only been partial implemented through an Executive order, which is legislative very easy to reverse, but not fully ratified and implemented as it requires congressial approval first.

So what stops us from just renegotiating it again?

Unsurprising. Just another knife in the back from the supposed “ally” across the pond.

No, the US citizens are hit with the tarriffs. We in EU, do no longer see the US as an ally, but as our older brother that is mentally challenged and has entered into a psychotic episode.