Imho, if this was a set the most difficult piece to forge would be the resolute desk. I've looked at some high res photos from Trump signing and compared them to Biden's and the wood grain pattern is identical on the trim. Also matched up other unique wood grain patterns on the top. Any woodworker with an eye for detail will tell you the same.

Also people keep saying there is no parking lot outside the real Oval office, but there is a drive way you can see it in a photo of Trump and Kim Kardashian at his desk.

I think it's time to put this theory to rest, Biden is unfortunately in the White House. Hopefully not for long though.