There are two different bidens , the real one and his double which helps explain why his double signs his long form signature instead rather than the real joes who signs the short form. There was a post on here the other day comparing google images of both side by side. One has a wider -- eyes apart with detached ear lobes while the double has a longer thinner - eyes closer together and sitting higher - skull with a single detached ear lobe and the other lobe attached.