You, my friend, win the Internet! ^^^
Reminds me of a real long joke about a guy who goes to a party and in a drunken haze recalls a push-button gold toilet.
After a long search…
Punchline:* “Hey, Albert! Here’s the guy that shit in your Tuba!”*
From the Washington Post story on this:
I’m stealing it. 
He already has one.
This caused much hilarity here. But why did he ask for a Van Gogh? Wasn’t an American artist good enough? 
Had they offered him a golden shower instead, he would’ve jumped at the chance.
Because a Van Gogh painting shows you have class. As has been said of Loser Donnie, he’s a ‘poor person’s idea of what a rich person is’. It is a trope in many movies that a poor, uneducated person who suddenly comes into money will buy art for the name and have ‘solid gold toilets’ so as to show off his wealth and ‘class’.
The works of the Smithsonian are owned by the American people - and its normal to use its collection to decorate the White House. Several Supreme Court Justices have Smithsonian works in their offices, IIRC.
The Guggenheim is a private institution. While it isn’t unheard of for a private institution to loan works , its highly unlikely that they will loan one of their most important works to somewhere where very feel people will get the opportunity to see it.
When I ask for a Van Gogh, they call the cops.