From a reader. One of many:
Jonah — when I saw the picture of the president and Prince Abdullah holding hands, I thought of Kang and Kodos, disguised as Bill Clinton and Bob Dole during the 1996 campaign, walking down the street hand-in-hand.
From the episode (click here: http://www.tvtome.com/tvtome/servlet/GuidePageServlet/showid-146/epid-1439/):
Clinton Aide (closely resembling George Stephanopoulos): “People are becoming a bit confused by the way you and your opponent are… well… constantly holding hands.”
Alien Dole: “We are merely exchanging long protein strings. If you can think of a simpler way, I’d like to hear it.”
Just another Simpsons reference that I’m sure 96 other people have already emailed to you. Cheers.