But the federal system in the US seems to quite successfully have been coopted by politicians who spend most of their time raising funds, to stay where they are

But the federal system in the US seems to quite successfully have been coopted by politicians who spend most of their time raising funds, to stay where they are, in collaboration with companies who supply them with funds to get laws written to suite them. I know this is a bit of a caricature, but it seems to me that it now is really hard to change this system to something which takes the money out of the politics.