As Bostonist's non-lawyer friends stumble into work today and read the paper, they keep e-mailing us and asking, "Bostonist, you law-talking person, how is it that the Supreme Judicial Court can rule that a ban on same-sex marriage is unconstitutional generally, but OK when applied to out-of-state couples?" Allow us to explain.
This case involves a challenge to an old law that says no one from out-of-state can get married here if they would be forbidden from doing so in their home state (unless they intend to move here). Since no other state expressly allows gay marriage and many expressly forbid it, the practical effect of the law is that gay marriage in Massachusetts is definitely limited to locals and residents of the handful of states with no prohibition on gay marriage, and possibly limited to only Mass. residents.
The reason there can be different rules for Massholes and everyone else has to do with how constitutional challenges are evaluated by courts. When someone says a law is unconstitutional because it doesn't provide equal protection to a certain group (which is what led to the Goodridge decision that legalized gay marriage), the court first looks at the law being challenged to see whether it distinguishes among people based on a "suspect classification." Suspect classifications affect "protected classes" of people - those that have historically been discriminated against by law and custom. Suspect classifications (or "quasi-suspect" classifications, a distinction not worth getting into here) include race, sex, national origin, citizenship status, religion, or illegitimacy (that is, being born out of wedlock). (It seems weird that homosexuals aren't a protected class, right? Bostonist thinks so.)
Laws that affect a protected class have to be motivated by a compelling government need and must be well-designed to meet that need efficiently (sorry lawyers, Bostonist is simplifying here). If a law doesn't affect a protected class, it gets the lowest level of court examination: "Rational basis review." This means that if there is any rational government purpose for the law, it's OK. The Goodridge decision said there was no rational reason to deny marriage to gay people. (More on rational basis review and gay marriage here.) But in the case of out-of-state gay marriage, the SJC ruled that there is a rational reason: Comity, which is a fancy way of saying that states like to be nice to one another and get along.
The weird thing about this latest decision is that it is only possible because homosexuality has not been defined as a protected class. If other states still banned interracial marriage, comity would have to give way to preventing unequal treatment on the basis of race. The only dissenter in yesterday's SJC decision, Roderick Ireland, suggested that a ban on gay marriage is actually discrimination on the basis of gender, not sexual orientation, so it should get closer judicial scrutiny (Bostonist explains this argument here - scroll down to the 17th comment). Bostonist, for our part, agrees with Ireland, and also thinks comity is dumb.


