That always bugged the crap out of me and I'm glad it's coming back.
IMHO, a president can add to the collection of artifacts in the White House, but should never remove them. It's one of those things where the individuals opinion should not come into play because it's a matter of historical importance rather than personal preferences or aesthetics.
At most, they can move things to a dusty out of the way corner if they don't want to look at it.