Obama and Brad Pitt related!

First we wonder why Brad and Angelina visits the White House?

 http://www.telegraph.co.uk/news/worldnews/barackobama/9010861/Angelina-Jolie-and-Brad-Pitt-visit-Barack-Obama-at-White-House.html

Then we find out Obama and Brad are related?!

Angelina is also related to Clinton?!

http://www.dailymail.co.uk/home/article-1001741/Match-heaven-Obama-related-Brad-Pitt-Clinton-cousins-Angelina-Jolie.html

Now it all makes sense -_-