lators' hearts quite irrelevant: "It is a familiar principle of constitutional law that this Court will not strike down an otherwise constitutional statute on the basis of an alleged illicit legislative motive." United States v. O'Brien, 391 U.S. 367, 383 (1968). Or at least it was a familiar principle. By holding to the contrary, the majority has declared open season on any law that (in the opinion of the law's opponents and any panel of like-minded federal judges) can be characterized as mean-spirited.
The majority concludes that the only motive for this Act was the "bare ... desire to harm a politically unpopular group." Ante, at 20. Bear in mind that the object of this condemnation is not the legislature of some once-Confederate Southern state (familiar objects of the Court's scorn, see, e.g., Edwards v. Aguillard, 482 U.S. 578 (1987)), but our respected coordinate branches, the Congress and Presidency of the United States. Laying such a charge against them should require the most extraordinary evidence, and I would have thought that every attempt would be made to indulge a more anodyne explanation for the statute. The majority does the opposite—affirmatively concealing from the reader the arguments that exist in justification. It makes only a passing mention of the "arguments put forward" by the Act's defenders, and does not even trouble to paraphrase or describe them. See ante, at 21. I imagine that this is because it is harder to maintain the illusion of the Act's supporters as unhinged members of a wild-eyed lynch mob when one first describes their views as they see them.
To choose just one of these defenders' arguments, DOMA avoids difficult choice-of-law issues that will now arise absent a uniform federal definition of marriage. See, e.g., Baude, Beyond DOMA: Choice of State Law in Federal Statutes, 64 Stan. L. Rev. 1371 (2012). Imagine a pair of women who marry in Albany and then move to Alabama, which does not "recognize as valid any marriage of
