Whether 42 U.S.C. § 1983 permits a plaintiff to litigate state-law claims to judgment in state court and then bring federal constitutional claims arising from the same events in federal court, notwithstanding the state judgment's ordinary claim-preclusive effect.
Holding
No. Section 1983 does not displace 28 U.S.C. § 1738 or create an exception to ordinary state-law claim preclusion.
Reasoning
The Full Faith and Credit Act, 28 U.S.C. § 1738, requires every federal court to give a state-court judgment the same preclusive effect that the judgment would receive in the courts of the State that rendered it. Thus, absent a federal statute that modifies this rule, Ohio law determines the preclusive force of Migra's prior Ohio judgment.
Allen v. McCurry had already held that § 1983 does not prevent issue preclusion: an issue actually litigated and decided in state court may not be relitigated in a later federal § 1983 case if state law would treat it as settled. The question left open in Allen was whether the same is true of claim preclusion, which can bar claims that could have been raised in the first action but were not.
Nothing in § 1983's language or legislative history clearly repeals or limits § 1738. Although § 1983 reflects congressional concern that state institutions might inadequately protect federal rights, that concern cannot logically support rejecting claim preclusion while accepting issue preclusion. If state-court adjudication were unreliable enough to justify an exception, the concern would apply to claims actually decided as well as claims omitted from the earlier suit.
Section 1738 chooses finality, comity, avoidance of vexatious litigation, and conservation of judicial resources over a plaintiff's preference to split state claims into state court and federal claims into federal court. Migra did not contend that the Ohio courts would have refused to hear her constitutional claims, and she could have filed first in federal court if she wished to pursue her federal claims there. Section 1983 therefore did not guarantee her the option of completing her state claims in state court and then obtaining a separate federal adjudication of related federal claims.