From Think Progress: How Marriage Equality Opponents’ Three National Strategies All Contradict Each Other.
At the federal level, opponents currently have three proposed strategies for rolling back some of the recognition that same-sex couples now have. Particularly in the wake of the Utah and Oklahoma decisions, groups like the National Organization for Marriage (NOM) and Family Research Council (FRC) have been emphasizing two talking points: that states should have the right to establish their own definition of marriage and that the religious views of people who oppose marriage equality should be protected. Each of the three proposed strategies would limit same-sex marriage to a certain extent according to these talking points, but the principles that inform each strategy are in conflict with each other.
Good read for understanding the strategy. Or lack thereof.