The White House is losing so many staffers that even the trees are leaving. http://www.bbc.com/news/world-us-canada-43941146
The real answer to the question is not nearly as fun as the one I was going to invent http://www.foxnews.com/politics/2018/04/30/white-house-mystery-where-is-macrons-gifted-oak-tree.html?ICID=ref_fark