We can't tell you if we are monitoring you. Or what capabilities for monitoring we have. Despite you being a US citizen which we would have no reason to monitor.
Just like you can't expect a scorpion not to sting? So far, the main argument for the continued existence of secret police A is the existence of antagonistic secret police B. Even the "bad guys".
Sounds like a great opportunity for an AI of the future: "find any group of people working together against everyone else, start subtracting members from the group until coherence reaches 0". That would deal with the spooks and the ones that create work for them in one swoop. Ahhh, I can dream, can't I.
If they are trying to avoid divulging capabilities to foreign agencies, what does your citizenship have to do with anything? "I know it's Top Secret, but I'm a citizen! It's ok, you can tell me"
Scary stuff folks.