Wedding Officiant Legal Questions?

It is not illegal; some officiants will not do it. Your situation is somewhat different, but I won't perform a commitment ceremony for two people if one of them is still legally married or for some other reason it LOOKS like a wedding and everyone THINKS it's a wedding but there is no license. I will only perform a commitment ceremony if the language is clear that the ceremony is not legally binding. I have a lovely passage that one of my couples wrote, stating that although everyone there wishes the ceremony could be a true legal marriage, it is still a uniting of minds, hearts and spirits.

In NJ, at least, (where civil unions are legal) I've done many weddings for same gender couples, and there is no language regulation for the ceremony. I can pronounce them married (if they have a license) but the license itself refers to the union as a 'civil union'.

You can perform the ceremony, sure. But it wont be recopgnized by the state unless it is legal. And no, nothing else besides a signed wedding certificate. At least in the state of MN.

It depends on, both the jurisdiction and, on church denomination(if a minister is wanted).