U.S. District Court Decision: Perry v. Schwarzenegger

  The freedom to marry is recognized as a fundamental right protected by the Due Process Clause. See, for example, Turner v  Safely, 482 US 78, 95 (1987) ("[T]he decision to marry is a fundamental right" and marriage is an "expression[ ] of emotional support and public commitment."); Zablocki, 434 US at 384 (1978) ("The right to marry is of fundamental importance for all individuals."); Cleveland Board of Education v LaFleur, 414 US 632, 639-40 (1974) ("This Court has long recognized that freedom of personal choice in matters of marriage and family life is one of the liberties protected by the Due Process Clause of the Fourteenth Amendment."); Loving v Virginia, 388 US 1, 12 (1967) (The "freedom to marry has long been recognized as one of the vital personal rights essential to the orderly pursuit of happiness by free men.")

http://documents.nytimes.com/us-district-court-decision-perry-v-schwarzenegger?ref=us#text/p112