Roberts, C. J., dissenting
almost entirely on the Due Process Clause.
The majority purports to identify four “principles and traditions” in this Court’s due process precedents that support a fundamental right for same-sex couples to marry. Ante, at 12. In reality, however, the majority’s approach has no basis in principle or tradition, except for the unprincipled tradition of judicial policymaking that characterized discredited decisions such as Lochner v. New York, 198 U. S. 45. Stripped of its shiny rhetorical gloss, the majority’s argument is that the Due Process Clause gives same-sex couples a fundamental right to marry because it will be good for them and for society. If I were a legislator, I would certainly consider that view as a matter of social policy. But as a judge, I find the majority’s position indefensible as a matter of constitutional law.
A
Petitioners’ “fundamental right” claim falls into the most sensitive category of constitutional adjudication. Petitioners do not contend that their States’ marriage laws violate an enumerated constitutional right, such as the freedom of speech protected by the First Amendment. There is, after all, no “Companionship and Understanding” or “Nobility and Dignity” Clause in the Constitution. See ante, at 3, 14. They argue instead that the laws violate a right implied by the Fourteenth Amendment’s requirement that “liberty” may not be deprived without “due process of law.”
This Court has interpreted the Due Process Clause to include a “substantive” component that protects certain liberty interests against state deprivation “no matter what process is provided.” Reno v. Flores, 507 U. S. 292, 302 (1993). The theory is that some liberties are “so rooted in the traditions and conscience of our people as to be ranked as fundamental,” and therefore cannot be deprived without compelling justification. Snyder v. Massachusetts, 291
