The White House is sorta pretending that they hung the original Declaration of Independence in the Oval Office, despite the original being displayed in the National Archives and being very faded whereas the Oval Office copy is clearly legible. If it were an original, they’d need to minimize light exposure as much as possible to prevent further fading. In which case, hanging it on an office wall would be an extremely stupid idea, but curtains would at least help somewhat. So it helps keep up the facade of it being an original copy to those with negative IQ.
The White House is sorta pretending that they hung the original Declaration of Independence in the Oval Office, despite the original being displayed in the National Archives and being very faded whereas the Oval Office copy is clearly legible. If it were an original, they’d need to minimize light exposure as much as possible to prevent further fading. In which case, hanging it on an office wall would be an extremely stupid idea, but curtains would at least help somewhat. So it helps keep up the facade of it being an original copy to those with negative IQ.