Maybe it’s not the “background”, but rather who is standing behind POTUS, POTUS’s background - Think mirror and took the picture that’s really important… Q? Is that you Q?
Maybe the people ID’d can ID who was standing behind POTUS and taking the picture!
Look at the crew, they are all looking at each other, none are looking at the photographer or POTUS, which means the photographer took a hidden shot of the crew and office from behind POTUS.
Q? Is that you Q?