ADDED: I withdraw my previous comments (which I leave below) because I found a picture showing that Trump had actually installed flat lighting in a rotunda ceiling. If you look at the windows in this picture, they show a top reflection of the rotunda lighting. I was wrong before. https://www.readingthepictures.org/wp-content/uploads/2020/03/Trump_Oval_2.jpg This opens the possibility that Biden was not on a fake set, after all. ----------------- previous ------------- I have commented elsewhere on the lighting showing it's a fake office, a set, but now I have it! The lighting reflections coming from the leather chair's shiny surface show the light sources - and they do NOT match what the real office's chair shows. If you look carefully, the lights as reflected are a continuous long strip, and you can see the dark zones that comes from an open roof on a set (this is normally dark and the studio ceiling is high and kept dark). The real Oval Office normally does not have such sources nor does it when a TV crew comes in (the lights show separate spots). This office in the photo uses diorama lighting, which is used in a set. Also, yes the wallpaper is missing the vertical pattern in the real office. The imaged office is a fake and a construction on a set.