The practice of phone taps has been available since the phone was invented. You could listen in on the old “party lines” to your neighbor. The old patch cord operators could monitor the calls. The technology has improved what can be done. The government has deemed what will be done. And it appears they have deemed they will do whatever they want.
There is a difference between what is now possible yet completely unconstitutional.
I’m old enough to remember party lines as well.
My point being that Snowden went far beyond exposing what the NSA was doing within our borders. Those disclosures got a pass from me.
He went international, and thereby (IMHO) stepped into treason, by providing specific information that could be used by (potential) enemies.