- all surveillance cease at some fixed moment and
- all information collected for a preceding fixed period (say 3 years', or maybe all of it) be made available for public inspection forever.
By "all" I mean just that - ALL information. Everything collected about everybody: presidents, prime ministers, senators & congressmen, corporations, churches, public and private institutions, trusts, public and private officials, their secretaries, clerks, bartenders and hired courtesans,etc - all of us would have our private information revealed.
This would cause an upheaval in the politics of the nation but would also provide a bonanza of invaluable information for society to review going forward. Do you want to know how corporate leaders break the law? Just look at the data and gather statistics. Are our politicians making illegal deals? Ditto. And of course, is my wife hiding something from me?
Allow prosecutions to proceed and the revealed information to be submitted as evidence. We might have to set up special courts and do triage to handle the influx of lawsuits and criminal arrests but we could at least get some of the rats out of the barn. Whether we burn the barn down or not is society's choice (doesn't seem we have a very good barn right now anyway - reminds me a bit of Animal House).