The Supreme Court justices voted with a 5-4 majority, with Chief Justice Roberts and Justices Ginsburg, Kagan, Sotomayor and Breyer opposing the enactment of the law. Justices Thomas, Alito, Gorsuch and Kavanaugh would have been in favor of the law, had it been enacted.
Back in 2015, I really felt like the Supreme Court decision legalizing same-sex marriage was a conclusion. In a way, it was. After years of progress on the issue, it was suddenly legal everywhere. Full acceptance of same-sex couples, both socially and legally, seemed inevitable to me at the time. In hindsight I was incredibly naive.