Hoosier, you're being manipulated into pitting something entirely apolitical against human nature, and allowing it to divide you from your allies.
Michael Medved, first of all, is hardly "conservative" himself. Second, you would be surprised and shocked at the reality of the UFO thing, which is that it transcends politics and has some very heavy hitters on its side, such as Mercury 7 astronaut and Christian Gordon Cooper, who matter-of-factly makes no bones about it in his autobiography, though little of the book is about UFOs.
The whole UFO thing is emotional and gut-pitting, so somebody wants YOU to equate anyone who "believes" in UFOs with your enemy. It is a mistake to do so; it ONLY serves to divide.