Yeah it's a shitty statement "we're totally fine accidently targeting foreigners but come on, not 'mericans" because it's well known that once you have the capability it will be aimed at everyone anyway.

It's called political correctness. There is a longstanding undercurrent in American politics of treating Constitutional rights (aka natural rights) as only applicable to Americans [0]. Framing the issue in terms of lofty universal ideals would be politically suicidal. And with the current precarious situation, giving more energy to overly-simplistic jingoist chants is not what anybody needs.

[0] this seems to be a bit of proto-fascism that helped set the stage for the overt dynamic we've now got