[gpm]

Well sure, if I took the extreme position of arguing to never trust the government you'd be right.

That's not what I, or the person you are originally replying to is doing. Rather we would say something like "you are asking us to trust the government when it is bypassing or ignoring the checks and balances put into the constitution precisely because of issues like this". For a few examples:

Checks and balances are why the 6th amendment requires to a "speedy and public trial". Which the FISA courts are not providing. They are why the 6th amendment requires the accused to be informed of the "nature and cause of the accusation", which is regularly being violated by these secret proceedings by way of parallel construction.

You bring up the topic of warrants, but warrants (by the 4th amendment) must "upon probable cause [... describe] the place to be searched, and the person or things to be seized". From what little we have seen of the FISA proceedings, neither of those conditions are being respected.

You bring up the judicial branch, but the judicial branch is required (by article 3 section 2 of the constitution) to hear only cases and controversies, one sided proceedings that aren't even released publicly after the fact to be challenged are neither. This clause exists (I believe) precisely because one sided arguments lack the necessary checks and balances to reach a fair verdict