A similar bill passed the Alabama Senate last year by a near-unanimous majority, but was not considered in the state House.
The Libertas Institute, a think tank influential among the Utah Legislature's libertarian members, said there is no reason for government to license marriage, which can just as easily be officiated by churches or formalized through a contract between the parties.
"The long-standing violation of the sacred union of marriage — encouraged by those looking to shape society to match their vision — needs to be fixed," said Libertas President Connor Boyack.
Rep. Jake Anderegg, R-Lehi, said he agrees with the idea of getting government out of marriage and confirmed a colleague has had a bill drafted, but declined to say who.
"I would personally like to see the state out of the marriage-license business," Anderegg said, "but then I'd like to see the state out of the liquor-distribution business, too."
Sen. Jim Dabakis, D-Salt Lake City, the Legislature's only openly gay member, chalked it up to sour grapes in the aftermath of the historic ruling.
"I'm a Democrat and I am gay and I know in Utah what it's like to lose, so these guys, they might be saying things in this moment as this is happening that they may have second thoughts about," he said. "The idea of destroying marriage entirely because gay people can get married now would probably not withstand the scrutiny of some clear thought away from the decision."
Gayle Ruzicka, president of the Utah Eagle Forum, also opposed the notion of ending state-sanctioned marriage.
"It's a very bad idea to get rid of the marriage license. I don't think we should let things that happened today and the disappointment change the rule for us," she said. "There's a reason for the marriage license. It's a protection for children and families. ... Over the years, [couples] have gotten a marriage license so they can feel secure in their relationships and their marriage, that legal unit, so children could be taken care of and not abandoned."
Cliff Rosky, a University of Utah law professor who is on the board of Equality Utah, an LGBT advocacy group, compared the idea of shutting down marriage to the segregated South, where public schools and swimming pools were closed down after the courts ruled that they had to integrate.
"I regard that as a sad chapter in the history of the United States, and I don't think there's a strong movement [in that direction today]," he said. "It would be one thing if America came together and recognized that unmarried and married people are equal and should be treated as equal under the law. But that's not the spirit of this. The spirit is: If they can't have it, then no one can."
Anderegg also said the court's 5-4 decision makes clear that same-sex marriage is now the law of the land — as it has been in Utah for much of the time since December 2013 — but he warned that the court's decision puts the nation on a trajectory to legalizing other prohibited marital practices, including polygamy and bestiality.
"The question remains: At what point does the legal reasoning and the logic behind the legal argument, taken to its ultimate conclusion, at what point does that open up polygamy, bestiality and these so-called decency laws that we have had traditionally on the books for a long time now?" he asked. "At what time are they going to do that? 'I love my pet so therefore I should be able to marry my pet.' I know that's a ridiculous argument but there are some who would do that."
Utah's historic ban on polygamy has recently been challenged in court and a part of the bigamy statute struck down. The state is appealing the federal court ruling. State law still bars having sexual relations with or marrying animals.
Rosky said it is absurd and demeaning for Anderegg to try to lump gay Americans in with animals that cannot consent.