The taxpayers sued in federal district court to contest the imposition of a Louisiana state ad valorem tax on certain of their property for the years 1967, 1968, and 1969. Previously, the same taxpayers had contested in state court the levy of the same tax on the same property for the year 1966, raising the same constitutional objection: that the Import-Export clause of the United States Constitution protected their property, in its asserted condition of transit, from state taxation. The district court held that the federal suit was barred by the earlier state court determination of the constitutional issue between these same parties. Judge Rubin explained that Louisiana would not bar the action as a matter of res judicata, but would consider the Import-Export issue settled between these parties under the Louisiana doctrine of “judicial estoppel.” We agree with the district court’s exposition of Louisiana law, and affirm on the basis of its opinion, reported as American Mannex Corporation v. Prejean, E.D.La. 1971,
The extent to which a federal court must attach conclusive effect to prior state court proceedings is a federal question. Adam v. Saenger, 1938,
This does not necessarily mean, however, that a federal court is invariably bound to a state’s own interpretation of res judicata or judicial estoppel. Other well-defined federal policies, statutory or constitutional, may compete with those policies underlying section 1738.
1
For example, federal tax policy may dictate limited application of collateral estoppel when there is federal reliti-gation of a state court determination bearing on federal tax liability. See Commissioner of Internal Revenue v. Sunnen, 1948,
The application of state law we approve today is state law wrapped in a cocoon of federal law governing the degree of adherence to state law — not unequivocal application of naked state law.
Affirmed.
Notes
. See Byrd v. Blue Ridge Rural Electric Cooperative, Inc., 1958,
.
Compare, e. g.,
Lyons v. Westinghouse Electric Corp., 2 Cir. 1955,
See Note, Res Judicata: Exclusive Federal Jurisdiction and the Effect of Prior State-Court Determinations, 53 Va. L.Rev. 1360, 1384 (1967):
[I]f a federal purpose or interest will be undermined by allowing collateral estoppel effect, as might occur when a determination of law would be given this effect or when the availability of federal procedure is a prerequisite to carrying out' the intent of Congress implicit in its definition of the substantive federal claim, a valid reason may exist for denying collateral estoppel effect. In any event, the federal purpose and interest which might be undermined by applying collateral estoppel must be balanced against the policy reasons which support this res judicata doctrine.
See generally Note, The Res Judicata and Collateral Estoppel Effect of Prior State Suits on Actions Under SEC Rule 10b-5, 69 Yale L.J. 606 (1960) ; Comment, Exclusive Federal Jurisdiction: The Effect of State Court Findings, 8 Stan.L.Rev. 439 (1956).
