“There are a lot of 40-year-olds out there who ain’t particularly competent,” Sanders said. “Older people, you know, you look at the individual. I don’t think you make a blanket statement.”

Haley, the 51-year-old former governor of South Carolina, announced her bid for the Republican nomination for president last week. In her announcement speech, calling for “a new generation,” she expressed support for a policy mandating mental competency tests for politicians older than 75.

Former President Donald Trump, 76, has announced a run for re-election, and a host of other Republicans have also hinted at possible campaigns. President Joe Biden, 80, is also expected to run again.