JACK POSOBEIC (CORRESPONDENT): Yet many prominent liberals have pointed out Biden's numerous lapses on the campaign trail. In fact, former Clinton adviser Dick Morris said that Biden should be required to have a test for Alzheimers Disease. The Biden supporters have claimed this is all disinformation campaign or blamed anyone who mentioned it as attacking the former vice president for a stutter. No one is talking about a stutter. And Biden literally spent years in the public eye with no sign of this.