In a nutshell: (1) State officials need not enforce federal laws that the state has determined to be unconstitutional; nor may Congress mandate that states enact specific laws. But (2), states may not block federal authorities who attempt to enforce a federal law unless a court has held that the law is unconstitutional. And (3), individuals are not exempt from prosecution by the federal government just because the state where they reside has legalized an activity or pronounced that a federal law is unconstitutional;
Yes States Can Nullify Some Federal Laws Not All Cato Institute
Why just "marriage equality" for gays NYCarbineer? You a bigot against siblings or polygamists expressing their consenting love for each other in marriage? Why exactly? Because they are repugnant to the majority for this or that reason?
I'd like to see the fed try to crack down on states that deny gay marriage licenses or polygamy licenses or whatever other licenses this "limbo lawless attrition" state the SCOTUS has left this country in with respect to marriage definitions. A dead definition is a dead definition. Who gets to decide how to "wing it" in the interim? Just gays? Hardly "marriage equality".
Meanwhile...
The county clerk in San Diego County, CA was talking about just such a thing when he questioned how a federal entity could nullify a majority statute voted in as referendum without actually finding that statute unconstitutional at the highest level. He was suing, hoping to get the Supreme Court to clarify what it meant in Windsor when it said [like almost 100 times in many differenT ways] that states have the "unquestioned authority" on marriage. That Clerk was worried about having to choose between his Oath to uphold laws enacted by the people of his state vs the threats from CA AG' Kamila Harris' and Gov Jerry Brown's office that he would be fired if he didn't defy his Oath.
Anyone who doesn't think this is orchestrated sedition had better rip off their rose colored glasses before they are required to do other things that the majority finds repugnant. Both sides of the aisle are up to it. The GOP's version of sedition using SCOTUS most glaringly [besides it's telling silence on the gay steamroller] is of course granting US citizenship to non-naturalized citizens who still hold and swear allegiance to foreign countries...even those that support Al Qaida. aka "Citizen's United". Your core values and your democracy itself dear citizens, are up for sale to the highest bidder from the FREAKS and TRAITORS at either end of the spectrum.
The Court in Windsor 2013
United States v. Windsor brought up Loving v Virginia but declined to apply it evidently because they ended the Windsor Decision saying that "gay marriage is only allowed in 11 states"...and they didn't include the State of California, being the 12th one gay lawyers were claiming "had legal gay marriage".
County Clerk Ernie Dronenburg's pleas were shut down. His appeals denied without comment. And this is the conservative bastion of the People protecting state's rights to sovereign rule!?
The interim-default AT ROCK BOTTOM LEAST should favor democracy over a newcoming weird social behavior challenge that the majority finds repugnant. SCOTUS even called gay marriage in Windsor "a new, weird concept defying thousands of years of tradition and repugnant to the majority" [paraphrased from page 13]:
"For marriage between a man and a woman no doubt had been thought of by most people as essential to the very definition of that term and to its role and function throughout the history of civilization. That belief, for many who long have held it, became even more urgent, more cherished when challenged. For others, however, came the beginnings of anew perspective..
So the Court itself admits it is repugnant to the majority and the new idea is just that. New and not supported by the majority. Equal rights of race are not new however. They have been grappled over by various cultures for millenia. So the Court defaults to the "new untested idea" of completely rearranging the core institution of society in favor of a vocal and impatient deviant sex-behavior minority? Untested gay marriage has more rights than states' self-rule while appeals are pending!!???? And subjecting children to this fool's-errand legally as guinea pigs?
Clearly as you say overwhelming majorities time and again have voted it down. And there's good reason for voting down "anything goes marriage". Countries in Europe now are facing a tidal wave of new marriage lawsuits...incest couples who want to marry...and polygamists...and due to their laws on equality and precedent...very similar or the same as ours in many cases....their courts, in disgust but with their hands tied are having to grant legal rights to marry to these "coattail-rider" repugnant "marriages"...and the children of course that will be caught up in these psychological and physical nightmares.
Yes, states should do THIS

to Alito, Thomas, Scalia and Roberts right now. Because they had the power of just their four votes to take up this case and give the tens of millions who have
already voiced their opinions at the ballot box on these BEHAVIORS marrying. When your conservative party abandons a state's right to self-rule on repugnant human behaviors, that's when voter apathy kicks in. Why even bother waking up, warming up the car, driving in foul weather or traffic or what have you...to cast your vote...only to have it not matter one iota because the party you thought would protect children... the most essential conservative resource this country's future, has
FAILED...why bother?
I wonder if it has occured to anyone that the GOP's passive involvement in its own murder will result in its near-future extinction? After all, as they assist normalizing the most far left values in human history into the center, where does that move the bar on conservative values and their pet projects like oil, greed, etc? Off the cliff...
It's hard to rally a base around values their gay left parents and likewise supporter/sympathizer parents taught them "are only things those old crazy conservatives used to embrace back in the 20th Century"...