[like_any_other]

How would term limits help? Without term limits, congressmen can be judged by their voting history. With them, we get always new batches of congressmen, while lobbyists stay the same and consolidate their power.

It's so easy to get rid of a congressman you don't like with term limits. But why do you think, on average, his replacement would be better? The replacement would only be more unknown.

[wat10000]

One problem is that seniority confers power. Throwing out a long-serving incumbent substantially reduces your district’s effective representation.

That could be improved by getting rid of de jure preferential treatment for things like committee memberships. You’d still have informal power from seniority though.

[ProllyInfamous]

I think long-term ("establishment") politicians are more-inclined to have been bought-out; new blood is more likely to make new alignments, churning up the dirty space that is politics.

Lesser of two evils sort of thought process...