If you've seen the Facebook post going around, then you might have been fooled by it. It does look pretty legit. But no, Matt Damon isn't buying a house in Lubbock.
The Clinton Foundation, the one run by Bill Clinton of course, has a celebrity division who's job it is to come up with creative new ways to help out the world. Kind of like a Hall Of Justice with famous people and money instead of superheroes with superpowers.