Several years ago I signed up to follow 3 politicians I cared about using this site https://www.govtrack.us/. Give it a try, and I think you'll see the deluge of laws, bills, and opinions is too much for a mere mortal mind with a 9-5.
I think this is why we talk about congresspersons' army of staffers and interns. You would not want a single person trying to deal with the complexity of all this information they need to have an informed opinion on in order to vote for/against.