The word for “old man” in Latin is “senex.” An assembly of old men is a “senate.” The U.S. Constitution is not too insistent on this point, demanding only that members of the U.S. Senate be at least 30 years of age when they take office. Notably, our current president Joe Biden was only 29 when elected to Congress but turned 30 before January 3, 1973, when he was sworn in. A lot of time has passed since then. In November, Biden will turn eighty.

And, yes, Biden is showing his age a bit. We can see it in his posture and gait. We can sense it in a new hesitation before he speaks. His mind is clear, but it’s not quite as sharp as it once was. The Republicans know that Americans are concerned about Biden’s age and they like to exaggerate his decline, often using another “sen” word to describe him: senile.

A just-released CBS News poll shows that voters overwhelmingly (73 percent to 27 percent) support an age limit for elected officials, with the most common cited cutoff being 70 years. If enacted, it would preclude about a third of the current U.S. Senate from seeking reelection. We would not see a repeat of the 2020 election, not only because Biden will be almost 82 on Election Day in 2024, but because Donald Trump will be seventy-eight. For what it’s worth Hillary Clinton will be 77 and Bernie Sanders will be eighty-three.

Ancient Rome was not unique in utilizing a body of elders as advisers. It’s a common feature of many cultures, including many Native American tribes. In general, experience brings wisdom, and long after our bodies betray us and we can no longer be effective hunters, gatherers or laborers, our minds can be an enormous societal asset. If nothing else, it’s way to earn one’s keep. If an individual elder slips into senility, it doesn’t have much effect on the body of elders. At any given time, both the U.S. Senate and the U.S. House usually have at least one or two people serving who really ought to retire because they’ve become cognitively impaired.

That’s not a luxury we can afford in the presidency, however. It’s not a good idea on our courts, either, and we might want to revisit the whole concept of lifetime judicial appointments.

When it comes to Congress, at least with the Senate, we shouldn’t ignore that the entire concept is rooted in the wisdom of elders. Voters are capable of evaluating congressional candidates and I see no need for a hard and fast age rule. It’s reasonable to prefer a younger candidate because you want a youthful perspective, or to oppose an older candidate who appears to be faltering. But I think people in their seventies make perfectly fine senators and congresspeople. It’s probably best to have mix of people from both ends of the age spectrum, just as it’s best to have people from a variety of different ethnic and religious backgrounds. How better to truly reflect and represent our society?

An age restriction is more compelling when it comes to the presidency, and to judges. But even in these cases, I think 80 is a much better cut-off then seventy.