Another American Monument Gone

The elm at the White House, the one on the back of the $20 bill, has fallen and been sent to the chipper.

I thought all the elms in the US were gone. I know the gorgeous 100+ year old elm in front of my grandparents’ place, what is now my cousin’s land, has been gone for years, done in by deadly Dutch Elm disease.

So what kind of elm was this that it survived so long?