Here's more from Roberts's dissent -- something he read for the first time out loud from the bench to signal his strong disagreement with the court's 5-to-4 decision:
Emotional scenes from same-sex weddings around the U.S. on Friday
Roberts's unequivocal disagreement is somewhat startling, especially as the conservative-leaning justice seemed to be searching for a middle ground just a few months ago during oral arguments on the case, reported The Washington Post's Robert Barnes.
The chief justice has a particular obligation "to try to achieve consensus," Roberts has said.
But Roberts didn't agree with the Supreme Court's 2013 decision to expand federal rights to legally married gay couples. And he made clear Friday that no consensus is worth a decision he feels oversteps the court's constitutional bounds.
Near the end of his 29-page dissent, Roberts registered this strongly worded reprimand:
"If you are among the many Americans -- of whatever sexual orientation -- who favor expanding same-sex marriage, by all means celebrate today's decision. Celebrate the achievement of a desired goal. Celebrate the opportunity for a new expression of commitment to a partner. Celebrate the availability of new benefits. But do not celebrate the Constitution. It had nothing to do with it."