Republican Senators John McCain of Arizona and Lindsey Graham of South Carolina believe states should remain free to prohibit gay marriage.

Appearing alongside Connecticut Senator Joe Lieberman on CNN's Piers Morgan Tonight to discuss the Supreme Court's decision to consider two cases related to marriage equality, Graham said he does not approve of such unions.

“My state, we're not going to change the traditional definition of marriage,” Graham said. “And I would support the traditional definition of marriage not out of hate but I believe that's just best for society. At the end of the day, states will come out differently on this issue. And I think that's the way it should be.”

McCain said allowing states to decide is “the principle of the conservative federalist belief.”

Lieberman, a former Democrat who now identifies as an independent, stated that he believes “marriage should be decided by the states. So that would mean that some states would have the right to prohibit same-sex marriage ...” (The video is embedded on this page. Visit our video library for more videos.)