Sure. The NSA exists, and it routinely violates the rights of the USA's own citizens, the ones that actually have constitutional rights. The idea that it would suddenly draw the line on foreigners is just absurd.
Yes, the US has an intelligence agency called the NSA, which works with intelligence agencies in the five eyes. There is something called the five eyes agreement that does draw that line.
It violates everyones’ human rights - not just the US’ own citizens - because human rights are universal whether some American thinks it or not.