Caseflicks

Supreme Court of the United States • 2001

New Hampshire v. Maine

532 U.S. 742 | 121 S. Ct. 1808 | 149 L. Ed. 2d 968 | 2001 U.S. LEXIS 3981 | 14 Fla. L. Weekly Fed. S 283 | 2001 Cal. Daily Op. Serv. 4303 | 2001 Daily Journal DAR 4303 | 69 U.S.L.W. 4393

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Takeaway

In short, this case establishes that a State, like a private litigant, may be judicially estopped from reversing a position it successfully advanced and benefited from in earlier litigation, particularly when the reversal would alter a settled interstate boundary.

Background

New Hampshire and Maine share a boundary that follows the Piscataqua River into Portsmouth Harbor. A 1740 decree of King George II provided that the dividing line would run through the harbor and “up the Middle of the River.”

In litigation during the 1970s concerning offshore lobster-fishing rights, the States jointly proposed a consent decree defining “Middle of the River” to mean the middle of the Piscataqua River’s main channel of navigation. Although the Special Master favored the river’s geographic midpoint, the Supreme Court accepted the States’ construction and entered the consent judgment in 1977. That decree fixed the lateral marine boundary offshore, not the full inland course of the river boundary.

In 2000, New Hampshire invoked the Court’s original jurisdiction and claimed that the inland boundary ran along Maine’s low-water mark. That position would give New Hampshire sovereignty over the entire river and Portsmouth Harbor, including the Portsmouth Naval Shipyard on Seavey Island. Maine moved to dismiss, arguing that the earlier proceedings barred New Hampshire’s claim. The Court granted Maine’s motion to dismiss.

Issues

Issue #1

Whether judicial estoppel barred New Hampshire from arguing that the Piscataqua River boundary runs along the Maine shore after it had taken a contrary position in the 1970s boundary litigation.

Holding

Yes. New Hampshire was judicially estopped from asserting that the boundary lies along the Maine shore.

Reasoning

Judicial estoppel is an equitable doctrine that protects the integrity of the judicial process. It generally prevents a litigant from prevailing on one position in a proceeding and then adopting a clearly inconsistent position in a later proceeding merely because its interests have changed.

Three considerations strongly supported estoppel here: New Hampshire’s current position was clearly inconsistent with its earlier interpretation; the Court had accepted the earlier position; and New Hampshire had benefited from the resulting consent judgment. In the 1970s, New Hampshire first agreed that “Middle of the River” meant the middle of the main navigable channel and later accepted the geographic-middle interpretation proposed by the Special Master. Either interpretation placed the boundary somewhere other than the Maine shore.

The Court’s acceptance of the 1977 consent decree was judicial, not merely administrative approval of a private compromise. The Court had determined that the States’ agreed construction reasonably gave effect to the 1740 decree and was a permissible resolution of the dispute. New Hampshire therefore could not characterize the earlier agreement as an arbitrary convenience lacking judicial endorsement.

New Hampshire could not avoid estoppel by asserting that its earlier position rested on mistake or an insufficient historical inquiry. In the prior litigation, New Hampshire had examined the relevant history, the materials it now relied upon were available at the time, and it had every incentive to press a Maine-shore boundary because doing so would have increased New Hampshire’s territory. Its own earlier submissions also recognized that the 1740 decree awarded Maine a portion of the river.

Allowing New Hampshire to redefine “Middle of the River” as the Maine shore would produce inconsistent judicial determinations about the same 1740 boundary language. Having secured and benefited from the prior interpretation, New Hampshire could not seek a further territorial advantage through an incompatible interpretation in a later case. The Court therefore declined to decide the parties’ competing historical claims or their arguments concerning claim and issue preclusion.

Issue #2

Whether judicial estoppel should apply when the party taking inconsistent positions is a State.

Holding

Yes, under these circumstances. No countervailing public interest justified allowing New Hampshire to change its position.

Reasoning

The Court acknowledged that estoppel based on inconsistent litigation positions ordinarily is not applied to States as readily as it is to private litigants. Governmental entities may sometimes need to change position to enforce the law, respond to changed facts, or implement changed public policy.

Those concerns were absent here. New Hampshire was not altering its position to enforce its laws, respond to a legal or factual change, or advance a new public policy. It was attempting to revise an interstate border by advancing a new interpretation of the same historical evidence.

Because the dispute was between two sovereign States with competing interests in the location of their common boundary, Maine was entitled to rely on New Hampshire’s earlier position and the judgment entered on it. The equitable balance therefore favored applying judicial estoppel despite New Hampshire’s status as a State.