okay, I'mma go full tinfoil hat here, because I'm starting to believe the doppelganger theory, and this photo is the keystone. Look at the shape of joe and james' faces, particularly the jawline and the mouth. While they are certainly similar in many ways, Joe's face has some obvious distinctions from James'.

Now compare older photos/videos of the bidens to modern clips of the "president."

Which Biden does he look more like?

Jokes about him being a clone or an alien in a skinsuit or all that aside, the easiest way to fake biden's "corporeal form" would be with someone who has at least a superficial resemblance to him, like in this case, a brother.

I just noticed the hairline is pretty dissimilar as well. James has a pretty square hairline, while Joe has an obvious Widow's Peak.

the biggest potential hole in this theory for me is that I can't find a clip of James Biden speaking to confirm how similar their voices are, but there does seem to be something here.

Obviously we know that biden got hairplugs at some point, so the hair thing could be incorrect as well, but there does seem to be something to this...