This is a very misleading and heavily edited video.
Here’s the full quote (the video is edited):
“I think that gay marriage should be allowed, if there’s a ceremony kind of thing, if you want to call it that. I don’t have any problem with that, but I do believe in preserving the sanctity of a union between man and woman.”
“I think private ceremonies are fine,” he said. “I do not think gay marriage should be legal.”
On gay marriage, he said he supports a measure on the Arizona ballot, “which recognizes the sanctity of heterosexual marriage.”
For those who don’t know. Arizona has a proposition on the ballot that would amend the state constitution and define marriage as between a man and a woman.
OP contains a video that appears to be deliberately edited to convey a message the speaker did not intend.