70?-show stopper. They’re like SCOTUS appointments. A 6 year probationary first term is good for a 2nd term. Doesn’t apply here. 12 years max is best unless there’s too much at risk-think Wisconsin(Johnson).
I agree that we should limit the Senators to 2 terms. However, that is not the way the game is played. Those in leadership have many years in service & hold the power. Unfortunatly we also find that the longer they serve the RINOyer they get.
The only way to stop this length of service is to repeal the 17th Amendment. That would eliminate many of the problems with the Federal government in total.
Couple the elimination of the 17th amendment with the ability for the President to fire any government employee in the Executive Branch & the Deep State could be eliminated as well.