> the surveillance is limited to non-citizens

How many times have we heard that one before?

> Warrants are required for FISA activities

A general warrant is not what most people would consider a valid warrant. It’s more like a rubber stamp.

> surveillance is limited to non-citizens

Being a non-citizen doesn’t somehow make you a lesser being unworthy of basic human rights.

So Carter Page is a non-citizen? Because the FBI was granted a FISA warrant to surveil him, and the Trump though the two hop rule? Not to mention it's been stated publicly by the OIG that the FBI used falsified evidence to receive those warrants

isn't it communications with non-citizens?

I imagine the government can twist that to mean that if a non-citizens could see it, then the government can access it legally.