Simply copy their positions. But if everyone's position were available, insider trading wouldn't even exist because it would give the game away

By the time you copy their positions, they've made their money.

In theory of course, them being blatantly and obviously corrupt would hurt them at the ballot box. In practice, this is not really something at moves the needle in American politics.

why do you think you would know their positions in time to do anything about it?

I will leave it to big investors with supercomputers connected directly to the exchanges to eat away at the potential profits of even the slightest insider trading activity automatically