I'd bet Biden is having sleep issues....sundowning.
A caregiver's worst nightmare. Take care of them all day and up 3-4 times a night to help them.
Biden's not going on national TV and suggesting ultra violent light applied internally, or ingesting disinfectants either.
You lot frequently call St. Ronnie the greatest American President ever, and he was falling asleep in Cabinet meetings, while over 100 of his aides were running things like "Abscam", and Iran-Contra on his watch. He was "official diagnosed" with Alzheimers less than 5 years after leaving office.
Donald Trump is mentally in very bad shape. Just watching his press conferences, and his whacko responses to interview questions. Just like the obstruction of justice via Twitter that you keep denying, Trump's obvious cognitive deficiencies are there for all to see.