Matal v Tam and Miracle on 34th Street

From today's ruling in

If private speech could be passed off as government speech by simply affixing a government seal of approval, government could silence or muffle the expression of disfavored viewpoints. For this reason, we must exercise great caution before extending our government-speech precedents.

Matal v. Tam, No. 15–1293. Argued January 18, 2017—Decided June 19, 2017. 

The court's decision in Miracle on 34th Street:

Uh, since the United States government declares this man to be Santa Claus, this court will not dispute it. Case dismissed. 

Harper, J.