Funny we don't hear these concerns about male senators in their eighties. James Inhofe is 87, talks absolute gibberish about science, and no one's saying the D word. Set next to Feinstein, he's an intellectual pygmy. That said, maybe 80 would be a humane upper limit for age upon entering a term. Then no one over 86 would be serving in the Senate. Time to watch sunsets at the lake house and write memoirs.