Because he doesn't want to admit he voted for an incestuous pedophile.
No, it's because there's not a single scrap of evidence supporting your stupid lie the way there is about Biden!
So how come it's SO difficult to prove your idiotic claim?
MUCH easier to find the proof that the sick pedophile dementia patient that YOU voted for is a molesting pervert, isn't it?
Or do YOU also invite young children to sit on your lap and play with your leg hair as Biden did?