This was the interview that Mitt Romney did on January 29, 2007 with ABC’s Nightline.
When the inevitable Mormon question comes up, he says that the US Constitution would come first, if he were President, in response to the question regarding the Mormon Prophet having the final word or trying to influence him in any way. Mitt does however admit that he is a “TRUE-BELIEVING Mormon” and “very proud of his heritage.” He doesn’t want to look “weird” or “peculiar”, rather normal, which is hard to do when you are a Mormon running for President.
Utahs coverage of the interview below (click here for the transcript):