Vice President Kamala Harris, responding to former President Donald Trump's claims about her IQ, said she would take a cognitive test — and "would challenge him to take the same one."
I would love to see it streamed/televised live in primetime in split screen so you can see them both doing it live so conspiracy theorists would have to really work at coming up with an excuse for Trump. Any other way Trump would afterwards just make up an alternate reality where he "aced" a dementia test.
I know he would still lie afterwards, and try and discredit the test, but people would have access to the video evidence, which is also the reason we have a better chance of him releasing his tax returns.
He has been planting the seeds for this. I'm sure it's also part of his disinformation campaign should he win, when people start showing video of him and his campaign doing horrible things, like trying to use the National Guard/Military against US citizens for instance.