Gay marriage vs traditional marriage -- why is the government in the business of legislation marriage anyways?

Because this country is religious oriented. I've heard how famous US govt institutions like the whitehouse capitol and pentagon are layed out in the same way as on some famous religious emblem. I think it is in what they face. ( I forgot what though). There is God we trust on the dollar. The bible identifies marriage as being between a man and a women. That is why.