I believe that’s an overstatement, not all politicians are corrupt. There are many members of Congress that are working to make things better and pass progressive legislation. AOC and Bernie for instance haven’t been silenced and replaced by big corporations.

I agree with you that the US’ federal Congress is more pro-billionaire, but there are still people that want to make things better. The issue is that those people do not have the votes to pass progressive legislation. Lots of people are seemingly happy with the status quo given that half of the states predominantly vote Republican each election cycle.