I am not sure why marriage should be a requirement for immigration. (Note: My views on this issue have more to do with the silly controversy about "defining" marriage, which I feel is a religious issue and which the government shouldn't be barging in on. The controversy started with some lesbians/gay people who wanted to marry their sweethearts, and they got courts to support them - and that was when certain religious groups started getting spooked and raising huge sums of cash to change state constitutions in order to stop them. I think that the marriages of unbelievers are none of those religions' business, and they shouldn't be poking their nose into government houses in an effort to make it their business. We have separation of church and state for a reason: religious diversity. It is one of America's greatest traditions, and some religions want to endanger that tradition.)

I have a better idea: instead of marriage being cause to become a legal, there ought to be a law providing that people living for at least a few months to a few years with American citizens in good standing, in a household relationship, can become American citizens. This would extend to domestic partners and close friends. That way, the state wouldn't have to entangle itself so much in the net of religion.

Note: I'm not gay. Just a liberal, as well as Jewish (this is a minority religion in this country, as well as most places).