Until recent years, many citizens had not even considered the possibility that two persons of the same sex might aspire to occupy the same status and dignity as that of a man and woman in lawful marriage. For marriage between a man and a woman no doubt had been thought of by most people as essential to the very definition of that term and to its role and function throughout the history of civilization. That belief, for many who long have held it, became even more urgent, more cherished when challenged. For others, however, came the beginnings of a new perspective, a new insight.
Slowly at first and then in rapid course, the laws of New York came to acknowledge the urgency of this issue for same-sex couples who wanted to affirm their commitment to one another before their children, their family, their friends, and their community. And so New York amended its marriage laws to permit same-sex marriage. New York, in common with, as of this writing, eleven other States and the District of Columbia, decided that same-sex couples should have the right to marry and so live with pride in themselves and their union and in a status of equality with all other married persons.
DOMA seeks to injure the very class New York seeks to protect. By doing so it violates basic due process and equal protection principles applicable to the Federal Government. When New York adopted a law to permit same-sex marriage, it sought to eliminate inequality; but DOMA frustrates that objective. DOMA’s principal effect is to identify a subset of state-sanctioned marriages and make them unequal.
DOMA undermines both the public and private significance of state sanctioned same-sex marriages; for it tells those couples, and all the world, that their otherwise valid marriages are unworthy of federal recognition. This demeans the couple, whose moral and sexual choices the Constitution protects, and it humiliates tens of thousands of children now being raised by same-sex couples.
DOMA is invalid, for no legitimate purpose overcomes the purpose and effect to disparage and to injure those whom the State, by its marriage laws, sought to protect in personhood and dignity.
– Justice Kennedy on DOMA