Of course they monitor everything! Anyone who believes otherwise must watch “Polyanna” reruns constantly.
Acres and acres and acres of computing power and storage, dozens of satellites, scads and scads of downlinking and surveillance antennas. Thousands and thousands of analysts, programmers, cryptographers and functionaries.
You didn’t think they were still working against the Russians, did you?
The only thing we have going for us is the total incompetence of government.