They were tricked by a propaganda machine. They may have been willing participants but had they known everything they never would have voted against their own interests. Yet every country in the western hemisphere, South America, Africa, Asia, and well everywhere doesn’t have anti propaganda laws. If you’re rich you can buy influence in any neo liberal country. Why is that?
I doubt anything interesting will turn up but let’s be fair: when the government does illegal stuff they destroy the documents. The stuff that we get usually gets misplaced and rediscovered.
Hilariously the FBI announced that they have 2400 pages of newly discovered material which by accident was not part of the disclosure process and was unknown to anyone in government.
https://apnews.com/article/jfk-fbi-trump-newly-discovered-files-0bd8ad5569f5fa3ed92b8ee9b795c9e7
Guaranteed to either not get released and not contain anything interesting.
So far all anti propaganda laws were passed in totalitarian states to suppress dissidents. But I think a good start would be to look at pre-existing limitations on free speech. Can you shout “fire” in a crowded theater just for funsies? No? Then we’ve already got a public safety caveat in our right to free speech. So you can’t say something that will kill people IF IT IS A LIE. There are also time place and manner restrictions on free speech. So we agree there is a time and place where you can criticize the state. So we sort of believe that during public emergencies, such as during a pandemic, you cannot spread lies about the pandemic.
There are ways to prove lies.