[My2Cents]

When someone stays in congress too long, they'll be overtaken by either senility or corruption (or both).

[af_vet_rr]

When someone stays in congress too long, they'll be overtaken by either senility or corruption (or both).

Didn't you mean to say "When someone stays in office too long, they'll be overtaken by either senility or corruption (or both)".

Unfortunately, the saying is true (and I'm paraphrasing heavily) - those best suited to the job want nothing to do with it. You get people at all levels from the city/county level on up, who will do whatever it takes to get power, keep power, and help their friends gain power.