lying comes easy to him. It's hard to say if he knows what is true at this point. It's in his head and he may think it is true. Is it a lie if you are in dementia? Technically it is but being mentally challenged it's best not to call him on it because it will only put him in an agitated state. He shouldn't be president is the problem. You can't really blame him at this point. He may have realized what was going on a year ago but he doesn't know jack now. Now those around him are the problem. This amounts to elder abuse to Joe...not that he doesn't deserve it and treason, illegitimacy, subversion, fraud, coup d'etat and whatever else constitutional scholars and an honest (hard to find) attorney can come up with.