Once upon a time, the kind of lobbying that gets us to these kinds of situations was illegal in the USA. Then a landmark supreme court decision decided that th

Once upon a time, the kind of lobbying that gets us to these kinds of situations was illegal in the USA. Then a landmark supreme court decision decided that this was unconstitutional. Then a more recent landmark supreme court decision further decided that a lot of campaign finance restrictions were also unconstitutional. The first step to changing things would be to get the Supreme Court to overturn those decisions. There's nothing in the US Constitution that openly declares that money is speech, and therefore that dumping it on Washington is protected by Freedom of Speech. That's (perhaps arguably) an ideological opinion that could change along with the attitudes of the sitting justices.