United Mine Workers of America v. Gibbs

After UMW members (defendant) violently blocked Gibbs (plaintiff) from performing his coal-hauling contract, believing the work was promised to their union, Gibbs sued in federal court alleging both a federal labor-law violation and Tennessee common-law claims arising from the same underlying conduct; a jury found for Gibbs on both claims, but the trial court set aside the federal-claim damages, and the court of appeals affirmed.