A couple of years ago I devoted a couple of blog posts to arguing that allowing gay Americans to serve openly in the military made good strategic sense. My logic was straightforward: We want to attract the best people to military service and any sort of artificial restriction (such as banning gays, or any other social group) inevitably reduces the talent pool from which the country can draw. The result would be a weaker military than we would otherwise have. I'm certain my posts had exactly zero impact on President Obama's subsequent decision to end "don't ask, don't tell," but I was certainly happy when he did.
I'm not a lawyer, and I don't have any firm views on how the Supreme Court is going to handle the issue of gay marriage that is now before it. But I do think a parallel argument can be made about the effect of allowing gay marriage on U.S. foreign policy and national security. Specifically, permitting gay people to marry in the United States would have positive effects on both.
First, ending discrimination against gay couples is going to make the United States a more attractive place for gay people to live, especially when compared to societies that do not permit gay marriage or that actively discriminate (and in some cases, criminalize) being gay. Accordingly, some number of gay people are going to seek to emigrate to the United States, just as some gay Americans are now choosing to live abroad so that their relationships can be legally recognized and protected. The United States has long benefited from its attractiveness as a place to live and work, especially by attracting talented people who are being persecuted elsewhere. The United States would have gained greatly had someone like Alan Turing had known he could find a welcoming home here.
Permitting gay marriage isn't going to cause a flood of gay foreigners to flood our shores, but at the margin, it will make the United States a more attractive destination for some. Which would be to our overall benefit.
Second, and perhaps more importantly, legalizing gay marriage would reinforce America's public commitment to individual liberty and freedom, and its parallel commitment to non-discrimination. More than anything else, that commitment is America's global brand. In this country, the government doesn't tell you where to live, doesn't tell you what job to pursue, doesn't tell you what God to worship, and doesn't tell you who to fall in love with. At the same time, the government also says that you should not discriminate against those who happen to be different from you in some way. Instead, you are supposed to treat them as individuals and to expect the same in return.
But in most parts of the United States, the government does tell you that if you are in love with someone of your own gender, you aren't eligible for the same recognition and benefits that heterosexual couples enjoy. That's not as punishing a policy as slavery or Jim Crow or some of the other forms of discrimination that our country has practiced (and gradually abandoned), but it is still a source of considerable unhappiness for many gay couples and it is fundamentally at odds with our normal claim to privilege individual freedom of choice over category distinctions.
This enduring commitment to individual freedom and choice, and this fundamental hostility to the idea that some groups are better or worse than others, is central to what the United States stands for as a society. In other countries, ethnic and sectarian differences abound and sometimes explode in violence. Similar things have happened here, and racial, religious, or ethnic tensions still exist in many places, but our abiding commitment to individual freedom is like a solvent that continually works to erode the idea that you can judge someone merely by knowing what social group they are from. Martin Luther King dreamt that his children "would live in a nation where they will not be judged by the color of their skin, but by the content of their character." And the same logic applies to sexual preference. In America, we should judge all people by their own individual characters, not by the gender they happen to prefer as lovers and partners.
Like those who once opposed interracial marriage or gays serving in the military, opponents of gay marriage have manufactured a bunch of bogus arguments about how allowing gays to marry would either damage children or undermine the institution of marriage itself. These arguments are pretty preposterous on their face. If anything, extending the right to marry to gay couples only reinforces the idea that stable, loving relationships between committed partners are a solid bedrock for society, as well as a profound source of long-term happiness. That's the main reason why opinion on this issue has shifted so rapidly in recent years. As homosexuality lost its stigma and straight Americans had more and more openly gay friends, the idea that married gay couples were some sort of subversive threat to society seemed increasingly ludicrous. As it should.
In American jurisprudence, the courts often look to whether the state has a "compelling interest" in regulating or interfering in some domain of activity. In this case, I'd argue that to the extent the state has an interest in this matter, that interest lies overwhelming in extending the privileges (and obligations) of marriage to all Americans. Not just because it is consistent with our commitment to liberty and to equality under the law, but also because it will be good for our global image, national cohesion, and even our long-term strength and prosperity.
So if you're still having trouble backing gay marriage on the simple grounds of fairness, you might consider supporting it on the basis of national security instead.
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