I have been wondering what law or mechanism (perhaps already existing in other countries) could prevent upper management coverups? For a while I though that pr

I have been wondering what law or mechanism (perhaps already existing in other countries) could prevent upper management coverups? For a while I though that press was that mechanism, however after 'embedded press' in Iraq War and governments going after press sources with impunity, or White House refusing to deal with it all together, we know that press can be coopted. We need something better, perhaps a law...or a gofundme for whistleblowers?