Drew Angerer and Win McNamee/Getty Images
- Nikki Haley is calling for "mandatory mental competency tests" for politicians over the age of 75.
- Over a sixth of the US Senate is age 75 or older. We asked some of them what they thought about the idea.
- Some said they'd be willing to take a test, but most were dismissive.
Nikki Haley is calling for "mental competency tests" for politicians over the age of 75 — a category that includes more than one-sixth of current US senators, both presumptive presidential frontrunners, and more than 30 current US House members.