Ha. You’re insane if you think that the US Congress is going to start letting 28 agencies in the EU start fining small businesses that have no EU presence whatsoever. The political ads write themselves.
I have an answer: no way is the EU going to cut ties with the US over this, and no way is the US going to let the EU trample their national sovereignty by letting regulators start fining small businesses with no US presence because some EU citizen sent their data INTO the US. That’s ludicrous.
I don't have an answer but I suppose we'll find out soon enough.