GOP Senators James Inhofe (R-OK) and Roger Wicker (R-MS) have introduced a bill prohibiting same-sex marriages on military bases by extending DOMA, and allowing military chaplains to opt out of conducting such ceremonies.

Think Progress explains:

The bill has two provisions. The first allows military chaplains to opt out of performing same-sex commitment ceremonies if they object for “reasons of conscience.” This is completely redundant, because the Pentagon made quite clear after “Don't Ask, Don't Tell” was lifted that no chaplain would ever be required to perform a ceremony in violation of their religious beliefs. This measure serves as cover for the bill's other provision, which extends the Defense of Marriage Act to prohibits same-sex marriage or “marriage-like ceremonies” from taking place at military facilities, even in states where such commitments would be legally recognized. Inhofe's statement exemplifies this spin:

INHOFE: President Obama and his administration are dismissing their responsibility to uphold the law of the land by unilaterally deeming DOMA unworthy of enforcement. At the same time, since the repeal of the military's Don't Ask, Don't Tell policy, they have begun to pressure military chaplains to fall in line with their liberal same-sex marriage agenda. This bill protects military chaplains from being forced to go against their conscience and religious beliefs in regard to this issue. This is something the chaplains that serve this country need and deserve.