It's especially surprising considering those congressmen should in theory have exactly 0 power over anything in the country where this lawsuit is taking place.
But honestly, Apple has bitten a bitter fruit on this one; there's no way they'll win this.
Well, they look like bunch of arrogant clueless idiots to whole world (I am seeing this story in various tabloids across Europe), if that was their mission then congrats to success.
It will also alienate non-trivial part of Swiss population, who are (rightly) patriotic to everything Swiss-made or grown. Few millions of direct losses in one of the wealthiest (albeit small) markets globally.
Is somebody from brexit team, ie Boris Johnson employed as consultant on this brilliantly executed move?
You are being slightly US centric there - while what you say may be true in the US - I don't think congressmen have much influence in the Swiss Courts.
But honestly, Apple has bitten a bitter fruit on this one; there's no way they'll win this.