The justices marked the two-year anniversary of their Obergefell ruling with a summary ruling that repeatedly cited it.
A Colorado baker says the Constitution gives him the right to deny service to a same-sex couple getting married.
Arkansas is the latest Southern state to declare war against same-sex marriage and parenting.
The court on Thursday struck down the Arkansas city's ordinance banning discrimination based on sexual orientation or gender identity, according to CBS News.
This one involves birth certificates for children of same-sex couples.
The state Supreme Court made it harder for same-sex couples to be listed on the birth certificates of their children.
The states object to federal guidance on transgender students' rights, including the right to use facilities matching their gender identity.