Put out a law that makes every single file and document within the CIA, NSA, DIA, and so on, up until the present, available for public viewing, unredacted.
Why is this important?
In this day and age of increasing authoritarianism and nationalistic sabre-rattling, the importance of knowledge and an informed public cannot be ignored. As someone growing up during the Bush years, I do not wish to see the powerful function in secret, nor as a history major to see things such as the idiocy and human rights violations of the superpowers during the Cold War repeated again, with possibly disastrous results, for humanity, for wildlife, and the planet. By releasing the files of the intelligence community and previous agencies, we can be informed on past activities, legal and not, and make better decisions as a voting public on topics such as national security and wars.