This is the problem. I can't prove based on an objective source I can drop a link to, because it's all classified. That's literally the crux of the problem. When someone says 'trust us, we have all this evidence, but we can't let you see any of it because it's a secret,' does your skepticism not trigger in the least bit?
I can say that there are only 11 judges listed as being on the FISA court, and I don't believe that 11 people can personally oversee every instance of the NSA conducting surveillance on all potential Americans of interest around the planet. Maybe they can. Who knows, it's classified.
Congress is a different branch than the presidency, doesn't mean Mitch McConnell is an independent check-and-balance on the authority of the president.
It's literally their job to be aware of that. They have a staff whose entire job it is to keep them aware of that. If they can't keep track, what's the difference between them and the congressional committee that's supposed to be keeping tabs on the NSA?
The people who do national security for a living are in a bubble that facilitates the construction of boogeymen. And if they can't give me any credible evidence as to the existence of said boogeymen without saying 'sorry, that's all classified,' then why should I believe otherwise?
Right now I'm supposed to be scared of China, but I personally see no evidence that I should be more worried about them than my own president who covered-up the threat from Coronavirus in February, and then tried to blame it all on the Chinese as a diversion. Looks to me like the Chinese were actually trying to warn us in February, while the President was trying to cover it up:
Clinical features of patients infected with 2019 novel coronavirus in Wuhan, China - January 24, 2020
https://www.thelancet.com/journals/lancet/article/PIIS0140-6...
Clinical course and outcomes of critically ill patients with SARS-CoV-2 pneumonia in Wuhan, China: a single-centered, retrospective, observational study - February 24, 2020
https://www.thelancet.com/journals/lanres/article/PIIS2213-2...
If the Taliban aren't a threat to U.S. national security, then why was the longest war in American history fought on Afghan soil? Isn't that where all those 9/11 hijackers were from, and the country that bankrolled them? If they weren't from Afghanistan why didn't we sanction or invade the country they were actually from, and that gladly bankrolled the operation? Is that classified too?
https://www.npr.org/2020/05/13/855611173/fbi-accidentally-re...
Oops... I guess it isn't anymore.