Angelo M. Codevilla says he helped construct FISA after Watergate, and the idea is inherently unconstitutional in of itself. He wants to help destroy it. I copy paste a portion for your pleasure.
Power and Purpose
Few paid attention to the Constitution. On the surface, any law that conditions the exercise of an inherently executive function on prior approval by the judiciary mixes powers that the Constitution expressly separates. Besides, ex parte secret proceedings are wholly contrary to responsible government. These are the proceedings that defined Henry VIII’s infamous Star Chamber.
My basic argument against FISA, other than its patent un-constitutionality, was that ex parte pre-clearance of surveillance by a judiciary whose ignorance of the cases on which it rules is broken only by the agencies, and that acts in secret, poses an irresistible temptation to abuse.
No. So long as FISA remains on the books, the party that controls the intelligence agencies can be counted on to make Watergate-on-steroids a part of American public life.
The only remedy for FISA is to repeal it and return to the prior system based on constitutionally defined responsibilities. Let the executive branch conduct surveillances for intelligence purposes according to its own guidelines. But then let us give free rein to challenging executive judgments in open court, through adversary process, with full powers of discovery.
Angelo M. Codevilla, is a senior fellow at the Claremont Institute and professor emeritus of International Relations at Boston University. He was a Foreign Service officer and served on the staff of the U.S. Senate Intelligence Committee between 1977 and 1985.
https://dailycaller.com/2020/04/29/angelo-codevilla-fisa-foreign-intelligence-watergate-james-mccord/