National Labor Relations Board v. Nash-Finch Co.

Title 28 U. S. C. § 2283 provides;

“A court of the United States may not grant an injunction to stay proceedings in a State court except as expressly authorized by Act of Congress, or where necessary in aid of its jurisdiction, or to protect or effectuate its judgments.”

The question is whether the National Labor Relations Board may, through proceedings in a federal court, en*140join a state court order which regulates peaceful picketing governed by the federal agency. The District Court rejected the Board's contention that it is within the exception to § 2283,1 recognized in Leiter Minerals, Inc.…