The leader of the free world included in his Budget speech a section entitled Where are the space aliens? Now I'm not objecting to someone saying that extraterrestrial life may exist, I've been waiting for them to bring elvis back for a few years now, but using the term space aliens sort of reduces ones credibility a bit wouldn't you say?
Of course, if you need a distraction from that whole "war with Iraq" and "North Korea has nukes" thing, what better to use than "Space Aliens".