On June 26, 2018, the Supreme Court decided Trump v. Hawaii, 585 U.S. 667 (2018). Chief Justice Roberts, writing for the Court, held that 8 U.S.C. § 1182(f) grants the President broad discretion to suspend the entry of aliens, and that Proclamation 9645 was a lawful exercise of that authority. The Court reversed the Ninth Circuit.
That decision is the last word on the proclamation Chuang had enjoined in October 2017. The Maryland injunction had already been stayed in December 2017. A district-court preliminary injunction is not a Supreme Court holding. When the two conflict, the Supreme Court wins. That is not commentary. That is the judicial hierarchy.
This site does not invent a separate Maryland merits reversal caption. The controlling opinion is Trump v. Hawaii. The Greenbelt orders are the episode that made the stay and the later merits fight necessary.