This has been a great problem in Congress, Senators, Congressmen, and their staffers being able to trade legally on inside information.
I would say the reading should be interesting on the Financial Disclosure forms filed this year and next.
Peter Schweizer’s outstanding book “Secret Empires” explains how Congress passed legislation making it illegal for them to make investments based on insider trading. Then, in a later piece of legislation, they took it all back. Congress is so corrupt.