The case is Wade v. Univ. of Mich.; as is common for such denials of review, the majority didn't offer a detailed opinion, but Justice David Viviano, joined by Justice Brian Zahra, dissented:
In 2001, the University adopted Article X, which bans the possession of firearms on its campus or "any property owned, leased or otherwise controlled" by the University. That prohibition applies to all persons regardless of whether they possess a concealed-carry permit. Plaintiff unsuccessfully applied for a waiver under Article X. The record indicates that plaintiff does not work, reside, or study at the University and has a concealed-carry permit….
[T]he Court of Appeals disregarded the analysis required by the United States Supreme Court for Second Amendment disputes and invented a confusing four-factor test that bears almost no resemblance to the Supreme Court's test. On remand, the Court of Appeals set forth the following factors for resolving Second Amendment challenges:
