When newbies get elected, they have a tough time navigating the corridors of power. This is where the lobbyists come in: they've seen the system (they probably were a part of it before becoming lobbyists), they know how it works, and they're just too happy to help out. This way their influence grows stronger year by year.

Term limits is not the answer. I think California's open primaries will help in electing moderates, people who are willing to look at all sides of the equation.