That's the thing that is missed about the US's governmental system. The House of Representatives has quick turnover, the Senate slower, and the Supreme Court, slowest. And their terms are staggered. It's all by design. It's tragic that the US and the UK are trying to turn the Senate and House of Lords into the same body as the House of Representatives and House Commons, respectively. It breaks a check on power and a pillar of stability.
I don't think that design ever expected a class of professional politicians who spend their lives in office. I think the expectation was that people would serve a few terms as a service to the Country then return to their private lives, not dictate policy for entire generations.
For that to work, it would need the House to encourage frequent turnover every two years. This could be done by having more Reps with each having fewer constituents, so each Rep has less influence and power. It was like this, until the lobbyists realized that too many Reps would be difficult to control and influence so the size of House was capped in 1929.
https://www.pewresearch.org/fact-tank/2018/05/31/u-s-populat...
