D. 1931
The first notable case in which the United States Supreme Court ruled on a prior restraint issue was Near v. Minnesota, 283 U.S. 697 (1931). In that case the Court held prior restraints to be unconstitutional, except in extremely limited circumstances such as national security issues. The ruling came about after Jay Near's newspaper, The Saturday Press, a small local paper that ran countless exposés of Minneapolis's elected officials' alleged illicit activities, including gambling, racketeering, and graft, was silenced by the Minnesota Gag Law of 1925, also known as The Public Nuisance Law.