delivered the opinion of the Court.
Congress has provided for removal of eases from state court to federal court when the plaintiff’s eomplaint alleges a claim arising under federal law. Congress has not authorized removal based on a defense or anticipated defense federal in character. This ease presents the question whether removal may be predicated on a defendant’s assertion that a prior federal judgment has disposed of the entire matter and thus bars plaintiffs from later pursuing a state-law-based case. We reaffirm that removal is improper in such a ease. In so holding we clarify and confine to its specific context the Court’s second footnote in
Federated Department Stores, Inc.
v.
Moitie,
I
This case arose out of a series of mortgages and conveyances involving a parcel of real property in New Orleans. In 1983, a partnership that owned the Louisiana equivalent of a leasehold estate in the property mortgaged that interest to respondent Regions Bank of Louisiana (Bank). 1 One year later, to secure further borrowing, the partnership granted a second mortgage to petitioners Mary Anna Rivet, Minna Ree Winer, Edmond G. MLranne, and Edmond G. MIranne, Jr. The partnership thereafter filed for bankruptcy, and the bankruptcy trustee sought court permission to sell the leasehold estate free and clear of all claims.
In June and August 1986 orders, the Bankruptcy Court first granted the sale application and later approved sale of the leasehold estate to the Bank, sole bidder at the public auction. The court also directed the Recorder of Mortgages *473 for Orleans Parish to cancel all liens, mortgages, and encumbrances, including the mortgages held by the Bank and petitioners. Nonetheless, petitioners’ mortgage remained inscribed on the mortgage rolls of Orleans Parish. Subsequently, in 1993, the Bank acquired the underlying land from respondents Walter L. Brown, Jr., and Perry S. Brown. The Bank then sold the entire property to the current owner, respondent Fountainbleau Storage Associates (FSA).
On December 29,1994, petitioners filed this action in Louisiana state court. They alleged that the 1993 transactions violated Louisiana law because the property was transferred without satisfying petitioners’ superior rights under the second mortgage. In their prayer for relief, petitioners sought recognition and enforcement of their mortgage or, alternatively, damages. Respondents removed the action to the District Court for the Eastern District of Louisiana. Federal-question jurisdiction existed, they contended, because the prior Bankruptcy Court orders extinguished petitioners’ rights under the second mortgage.
In federal court, petitioners filed a motion to remand and respondents moved for summary judgment. The District Court denied the remand motion. Relying on the Fifth Circuit’s decision in
Carpenter
v.
Wichita Falls Independent School Dist.,
The Fifth Circuit affirmed.
In dissent, priate under
Moitie
only where a plaintiff loses in federal court on an "essentially federal” claim and, recharacterizing the claim as one based on state law, files again in state court.
The Courts of Appeals have adopted differing views regarding the propriety of removing a state-court action to federal court on the ground that the claim asserted is precluded by a prior federal judgment.
2
We granted certiorari,
H
í>
A state-court action may be removed to federal court if it qualifies as a "civil action ... of which the district courts of the United States have original jurisdiction,” unless Congress expressly provides otherwise. 28 U. S. C. § 1441(a). In this case, respondents invoked, in support of removal, the district courts’ original federal-question jurisdiction over "[a]ny civil action . . . founded on a claim or right arising *475 under the Constitution, treaties or laws of the United States.” 28 U. S. C. § 1441(b); see also 28 U. S. C. § 1331.
We have long held that “[t]he presence or absence of federal-question jurisdiction is governed by the ‘well-pleaded complaint rule,’ which provides that federal jurisdiction exists only when a federal question is presented on the face of the plaintiff’s properly pleaded complaint.”
Caterpillar Inc.
v.
Williams,
Allied as an “independent corollary” to the well-pleaded complaint rule is the further principle that “a plaintiff may not defeat removal by omitting to plead necessary federal questions.”
Id.,
at 22, If a court concludes that a plaintiff has “artfully pleaded” claims in this fashion, it may uphold removal even though no federal question appears on the face of the plaintiff’s complaint. The artful pleading doctrine allows removal where federal law completely preempts a plaintiff’s state-law claim. See
Metropolitan Life Ins. Co.,
B
Petitioners’ complaint sought recognition and enforcement of a mortgage. The dispute involved Louisiana parties only, and petitioners relied exclusively on Louisiana law. Respondents defended their removal of the case from state court to federal court on the ground that petitioners’ action was precluded, as a matter of federal law, by the earlier Bankruptcy Court orders. We now explain why the removal was improper.
Under the doctrine on the merits of an action precludes the parties or their privies from relitigating issues that were or could have been raised in that action.”
Moitie,
A case blocked by the claim preclusive effect of a prior federal judgment differs from the standard case governed by a completely preemptive federal statute in this critical respect: The prior federal judgment does not transform the plaintiff’s state-law claims into federal claims but rather extinguishes them altogether. See
Commissioner
v.
Sunnen,
*477
In holding removal appropriate here, the Court of Appeals relied on a footnote — the second one — in our Moitie opinion. The Fifth Circuit is not alone in concluding from the Moitie footnote that removal properly may rest on the alleged pre-clusive effect of a prior federal judgment. See supra, at 474, n. 2. The Moitie footnote, however, was a marginal comment and will not bear the heavy weight lower courts have placed on it.
We granted certiorari in
Moitie
principally to address the Ninth Circuit’s “novel exception to the doctrine of res judicata.”
In the course of reversing the Ninth Circuit’s holding on preclusion, we noted, without elaboration, our agreement with the Court of Appeals that “at least some of the claims had a sufficient federal character to support removal.”
“Moitie’s
enigmatic footnote,”
Rivet,
In sum, claim preclusion by reason of a prior federal judgment is a defensive plea that provides no basis for removal under § 1441(b). Such a defense is properly made in the state proceedings, and the state courts’ disposition of it is subject to this Court’s ultimate review. 3
* # *
For the foregoing reasons, the judgment of the Court of Appeals for the Fifth Circuit is reversed, and the ease is remanded for further proceedings consistent with this opinion.
It is so ordered.
Notes
The events leading to this lawsuit actually involved two predecessors of Regions, First Federal Bank and Secor Bank. For ease of discussion, we use the name Regions Bank to cover all three entities.
Compare
In re Brand Name Prescription,
Drugs,
We note also that under the relitigation exception to the Anti-Injunction Act, 28 U. S. C. § 2283, a federal court may enjoin state-court proceedings "where necessary ... to protect or effectuate its judgments.” Ibid.
