FOIA obviously doesn't apply to everything. But in the case of FISA it is overseen by an independent judiciary and all of the deliberations and controversies were widely covered by the independent press.
Not to mention independent organisations like ACLU, EFF etc. who have been very vocal about trying to abolish the FISA process entirely.
Again none of this would remotely happen in China. We've seen first hand what happens to the media and dissenters in HK.
