Five Republican Judges and one Louisiana Democrat. The two dissenting Judges were Democrats.
Pardon me if I see a little politics operating here. I suspect it played a part in this decision.
That’s always a possibility, but there have been lots of interevening years and Supreme Court ideological compositions to reverse U.S. v Wong Kim Ark.
According to Westlaw (one of the primary online legal research services for lawyers and legal professionals. Information resources on Westlaw include more than 40,000 databases of case law, state and federal statutes, administrative codes, newspaper and magazine articles, public records, law journals, law reviews, treatises, legal forms and other information resources.), the Wong holding has been cited more than a thousand times in subsequent rulings.