Taylor v. Sturgell, 553 U.S. 880 (2008):
The preclusive effect of a federal-court judgment is determined by federal common law. See Semtek Int'l Inc. v. Lockheed Martin Corp., 531 U.S. 497, 507-508, 121 S. Ct. 1021, 149 L. Ed. 2d 32 (2001). For judgments in federal-question cases--for example, Herrick ...
Taylor v. Sturgell, 553 U.S. 880 (2008):
The preclusive effect of a federal-court judgment is determined by federal common law. See Semtek Int'l Inc. v. Lockheed Martin Corp., 531 U.S. 497, 507-508, 121 S. Ct. 1021, 149 L. Ed. 2d…