"Secret courts" - no, there aren't. The FISA system is about surveillance warrants not trials. It's nothing like the "secret courts" in countries that have given term its meaning.

Again men established those laws and run the "global spying" system. The USA isn't like Russia in terms of the state security apparatus controlling elections. Indeed Hoover's FBI days even managed to pale into comparison with what the Russians are up to today.

FISA and surveillance could be voted out by the elected representatives at any point, indeed it almost happened.