DOMA.

Congress enacted DOMA in a honest and moral attempt to define what is marriage.  Congress was elected by the people, the Supreme Court was not.  Nature says: Cow and bull; horse and mare; dog and bitch; chicken and rooster; MAN and WOMAN.  That is the natural way.  In a male-male or woman-woman marriage, who is the husband and who is the wife?  If they adopt kids, who is the mama and who is the papa? 
Never mind constitutional rights or equalities, it is just not the way it was suppose to be.