Full Faith & Credit — States Recognizing Each Other's Judgments & Laws
The Full Faith and Credit Clause (Article IV, Section 1 of the Constitution) and its implementing statute (28 U.S.C. § 1738) require every state to recognize and enforce the public acts, records, and judicial proceedings of every other state. If you win a lawsuit in New York, you can enforce that judgment in California — California must give the New York judgment the same effect it would have in New York. If you get divorced in Texas, every other state must recognize that divorce. If you incorporate a business in Delaware, other states must recognize that corporate existence. Full Faith and Credit is the constitutional glue that makes the 50 states function as one legal system rather than 50 separate nations — see Erie Doctrine for the related principle governing federal courts applying state law, Federal Court System for the judicial structure, Federal Jurisdiction & Venue for how cases enter federal court, and Eleventh Amendment for when states can resist being sued — ensuring that legal rights established in one state don't evaporate when you cross the border. The clause applies primarily to judicial judgments (where its force is strongest — final judgments must be enforced with almost no exceptions), less forcefully to public acts (statutes and regulations — where states retain more latitude to apply their own laws), and to public records (official documents that must be admitted in evidence). The Supreme Court has developed a substantial body of Full Faith and Credit jurisprudence governing when one state must follow another's judgment, when it may refuse, and how the clause interacts with state choice-of-law principles.
Current Law (2026)
| Parameter | Value |
|---|---|
| Constitutional provision | Article IV, § 1 |
| Implementing statute | 28 U.S.C. § 1738 (records and judicial proceedings of state courts have the same full faith and credit in every court in the United States as they have in the state from which they come) |
| Judgments | Must be enforced if: (1) rendering court had jurisdiction, (2) judgment is final, and (3) parties had adequate notice and opportunity to be heard |
| Defenses | Lack of jurisdiction in rendering court; fraud on the court; judgment not final; penal judgment (some limitations) |
| Public acts (statutes) | Less absolute — states have more latitude to apply their own law when they have a significant interest |
| Child custody | UCCJEA and PKPA (28 U.S.C. § 1738A) — special full faith and credit rules for custody orders |
| Child support | Full Faith and Credit for Child Support Orders Act (28 U.S.C. § 1738B) |
Legal Authority
- U.S. Constitution, Art. IV, § 1 — "Full Faith and Credit shall be given in each State to the public Acts, Records, and judicial Proceedings of every other State. And the Congress may by general Laws prescribe the Manner in which such Acts, Records and Proceedings shall be proved, and the Effect thereof."
- 28 U.S.C. § 1738 — State and territorial statutes and judicial proceedings have the same full faith and credit in every court of the United States as they have in the courts of the state from which they come
- 28 U.S.C. § 1738A — Full Faith and Credit given to child custody determinations (Parental Kidnapping Prevention Act — PKPA — requires interstate recognition and enforcement of custody orders)
- 28 U.S.C. § 1738B — Full Faith and Credit for Child Support Orders Act (establishes rules for interstate recognition and modification of child support orders)
How It Works
Full Faith and Credit operates very differently for judgments versus statutes. For judgments, enforcement is near-absolute: when a court in State A enters a final judgment where it had proper jurisdiction and the parties had notice and an opportunity to be heard, State B must enforce it — even if State B would have decided the case differently or considers the judgment wrong. The enforcing state may not reexamine the merits. The only defenses are that the rendering court lacked jurisdiction (personal or subject-matter), the judgment was obtained by extrinsic fraud (not merely legal error), or the judgment isn't final (still subject to appeal or modification). This near-absolute rule is what makes civil judgments valuable — a judgment is collectible anywhere in the country. For public acts (statutes and regulations), the obligation is less stringent: states don't have to apply another state's law to every dispute touching both states; choice-of-law principles apply, and a state may use its own law when it has a significant interest. Full Faith and Credit requires only that states not arbitrarily refuse to consider sister-state law — they may decline when legitimate local interests justify applying their own rules.
Congress enacted specialized Full Faith and Credit statutes for the most problematic interstate family scenarios. The Parental Kidnapping Prevention Act (28 U.S.C. § 1738A) requires all states to recognize and enforce custody orders from courts with proper jurisdiction under the Uniform Child Custody Jurisdiction and Enforcement Act (UCCJEA), eliminating the forum-shopping problem where a dissatisfied parent could cross state lines and get a new custody ruling. 28 U.S.C. § 1738B makes child support orders recognizable and enforceable across state lines with specific rules about which state may modify an existing order. Full Faith and Credit applies only to judgments of U.S. state courts — foreign country judgments are recognized under comity, an international-relations principle that is discretionary, not mandatory.
How It Affects You
<!-- pria:personalize type="eligibility" -->If you have a court judgment you need to collect from someone in another state: Full Faith and Credit means your judgment is a nationally portable legal instrument. To actually use it, you need to register ("domesticate") it in the state where the defendant has assets. Most states have adopted the Uniform Enforcement of Foreign Judgments Act (UEFJA), which provides a streamlined process: file a certified copy of the judgment with the clerk of court in the target state, along with an affidavit of the amount due. The clerk sends notice to the debtor, who has a set period (typically 30 days) to object on limited grounds — no jurisdiction in the rendering court, or extrinsic fraud. If no valid objection is filed, the judgment becomes enforceable as if entered in the target state and you can use that state's collection tools: wage garnishment (typically 25% of disposable income under federal CCPA limits), bank account levies (seize funds on deposit), and real property liens (which attach to property the debtor owns in that state and must be paid on sale or refinance).
The strategy: before registering, do an asset search — locate bank accounts, real estate holdings, and employer information in the target state. Services like Lexis Nexis Background Check, TLO, or IRB Search provide asset location for modest fees. Register in the state where the most accessible assets are. Time matters: statutes of limitations for enforcing judgments vary by state (typically 10-20 years, with renewal options) but don't run out the clock on collection actions.
Objections to enforcement are limited. The most common: the rendering court lacked personal jurisdiction over the defendant. If the defendant never had minimum contacts with the original state, was never served properly, or appeared only to contest jurisdiction, you may face a challenge. The enforcing court cannot re-examine whether the original judgment was correct on the merits — that's what Full Faith and Credit prohibits.
If you're a parent with a custody or child support order and your co-parent has moved to another state: Your orders travel with the children. Under the Parental Kidnapping Prevention Act (PKPA, 28 U.S.C. § 1738A) and the Uniform Child Custody Jurisdiction and Enforcement Act (UCCJEA) (adopted in 49 states), the state that made the original custody order retains exclusive continuing jurisdiction as long as at least one parent or the child remains there. A parent who moves to another state and tries to get a different custody order in the new state is almost always jurisdictionally blocked — the new state must defer to the original order and cannot modify it without the original state ceding jurisdiction.
To register and enforce a custody order in your co-parent's new state: file a certified copy of the order under UCCJEA § 305 with the family court in the new state. Registration is almost automatic — the new state must enforce the order as long as the original state had proper UCCJEA jurisdiction. Violations of custody orders (taking a child across state lines in violation of a custody order) can trigger the Parental Kidnapping Prevention Act's criminal provisions and FBI jurisdiction as a federal kidnapping offense.
For child support, the Full Faith and Credit for Child Support Orders Act (FFCCSOA, 28 U.S.C. § 1738B) requires interstate recognition. If your co-parent has moved, you can register the support order in their new state through the Uniform Interstate Family Support Act (UIFSA) process — contact your state's child support enforcement agency (typically under the state Department of Health and Human Services), which has reciprocal enforcement relationships with all other states. Interstate wage garnishment and license suspension enforcement are available through the IV-D program.
If you're dealing with cross-state legal conflicts after Dobbs (2022): Full Faith and Credit questions have become newly contested in the context of abortion law. Several states have enacted "shield laws" protecting providers who treat out-of-state patients, creating a potential collision between one state's judgment enforcing its own abortion ban against an out-of-state patient or provider, and the shield state's refusal to recognize that judgment. The constitutional issue: must a shield state give Full Faith and Credit to a sister state's civil judgment based on abortion conduct that occurred in the shield state and was legal there? Courts have not definitively resolved this, but the traditional rule is that Full Faith and Credit doesn't require enforcement of penal judgments (punitive awards meant to punish rather than compensate) and may not require enforcement of judgments that violate the forum state's strong public policy. Whether state civil abortion enforcement judgments qualify as penal judgments — or whether enforcing them would violate the shield state's public policy — is actively litigated. If you're an abortion provider in a shield state treating out-of-state patients, consult with counsel about your state's specific shield law protections and the limits of their enforceability against out-of-state civil judgments.
<!-- /pria:personalize -->State Variations
<!-- pria:personalize type="state-specific" -->Full Faith and Credit is inherently interstate:
- All states must comply — the obligation is constitutional
- Most states have adopted the Uniform Enforcement of Foreign Judgments Act, streamlining registration of sister-state judgments
- State choice-of-law rules (interest analysis, governmental interest, Restatement Second) determine when full faith and credit requires application of sister-state statutes
- State family law courts apply the UCCJEA and PKPA for interstate custody and support recognition
Implementing Regulations
The Full Faith and Credit Clause (Art. IV, § 1) is a constitutional provision with implementing legislation at 28 U.S.C. § 1738 — but no CFR regulations. Congress has enacted specific full faith and credit statutes including the Parental Kidnapping Prevention Act (28 U.S.C. § 1738A) and the Full Faith and Credit for Child Support Orders Act (28 U.S.C. § 1738B).
Pending Legislation
No standalone full faith and credit legislation in the 119th Congress — see Federal Courts and Child Support Enforcement.
Recent Developments
Full Faith and Credit questions have arisen in new contexts — particularly regarding the interstate recognition of same-sex marriages (resolved by Obergefell v. Hodges, 2015, which established a constitutional right to marriage equality) and, after Dobbs (2022), the interstate implications of abortion law — whether states that ban abortion must recognize other states' legal protections for abortion providers and patients. Proposals for "shield laws" (protecting providers who serve out-of-state patients) and anti-extraterritoriality arguments are testing the boundaries of Full Faith and Credit in the post-Dobbs landscape. The rise of remote work and cross-state digital transactions continues to create novel Full Faith and Credit questions about which state's laws and court orders apply.
- Abortion shield laws — interstate legal conflict (2025): As of April 2026, 22 states have enacted abortion shield laws protecting providers and residents who travel out of state for care. These laws specifically instruct state courts and law enforcement not to cooperate with out-of-state subpoenas or extradition requests related to abortion. Texas and other abortion-restriction states have enacted laws attempting to punish out-of-state conduct by their residents. The resulting legal conflict — each state claiming its laws apply to the other's residents — is a direct Full Faith and Credit clash that federal courts have begun to address. No Supreme Court ruling has yet resolved which state's law governs when a Texas resident travels to Colorado for an abortion; the conflict is expected to reach SCOTUS within 2-3 years.
- Gender recognition documents and interstate recognition: Trump's Day 1 executive order directing federal agencies to recognize only biological sex — and directing agencies to update passports, driver's licenses, and birth certificates to reflect binary sex — has created interstate Full Faith and Credit conflicts. States that issue gender-neutral or updated identity documents argue they must be recognized by other states under the Full Faith and Credit Clause; states that do not recognize gender marker changes argue they are not bound to recognize another state's administrative determinations on this point. Federal district courts in multiple circuits are hearing challenges; the legal landscape is unsettled as of April 2026.
- Respecting Marriage Act (2022) and same-sex marriage: The Respect for Marriage Act, enacted in December 2022, requires federal and state recognition of lawfully performed same-sex marriages regardless of where the couple currently lives. This provides a statutory layer of Full Faith and Credit protection for same-sex couples beyond what Obergefell (a constitutional ruling) alone would require, and survives potential overruling of Obergefell by future courts.