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Bank Markazi v. Peterson

Updated Oct 18, 2026

In brief

The Supreme Court upheld the law for this case, ruling that it did not violate the Constitution’s division of powers.

Where it stands
Decided

Decided 6-2 · April 20, 2016 · Opinion by Justice Ginsburg

What it’s about
People holding judgments against Iran sought to use nearly $2 billion in bonds in which Bank Markazi held an interest to collect those judgments.
Who it affects
The ruling leaves the law in place for the specific bonds sought by people holding judgments against Iran.

Summary: written with AI from the case record.

Illustration for Bank Markazi, aka The Central Bank of Iran, Petitioner v. Deborah Peterson, et al.
Conceptual illustration · AI-generated

What it's about

The Supreme Court agreed with the appeals court that the law targeting the assets in this case did not violate the separation of powers.

People holding default judgments against Iran sought to collect them from nearly $2 billion in bonds in Europe in which Bank Markazi, Iran’s central bank, held an interest as part of its foreign-currency reserves.

Congress passed the law while the lawsuit was pending, and it applied to financial assets identified in that one case.

Question presented

Whether §8772 - a statute that effectively directs a particular result in a single pending case - violates the separation of powers.

What the Court decided

Holding

Section 8772 does not violate the separation of powers. Pp. 12– 24. 758 F. 3d 185, affirmed.

Result
Affirmed

The vote

  • Joined the judgment
  • Dissented
  • Wrote an opinion
Majority · 6joined the Court's opinion
  1. Breyer
  2. Kagan
  3. Thomas
  4. Kennedy
  5. Ginsburgwrote the opinion
  6. Alito
Dissenting · 2disagreed with the result
  1. Sotomayor
  2. Robertswrote the dissent
6 justices joined the judgment, 2 dissented.

From the opinions

“Article III of the Constitution commits the power to decide cases to the Judiciary alone.”

— Chief Justice John G. Roberts, Jr.(dissent)

What's next

The Second Circuit’s ruling remains in force, governing the dispute over whether the bonds can be used to pay the judgments.

Documents

2

Docket activity

10
  • New analysis added

    Oct 18, 2026 · Court records

  • AI analysis generated: Case Briefing

    Oct 18, 2026 · Generated

  • New analysis added

    Oct 18, 2026 · Court records

  • AI analysis generated: Impact Analysis

    Oct 18, 2026 · Generated

  • AI analysis generated: Opinion Summary

    Oct 18, 2026 · Generated

Show 5 more
  • AI analysis generated: Decision Record

    Oct 18, 2026 · Generated

  • Case data updated: summary, question_presented, generation_metadata

    Oct 18, 2026 · Court records

  • Case data updated: question_presented, extraction_metadata

    Oct 17, 2026 · Court records

  • Opinion added: Bank Markazi

    Apr 20, 2016 · Court records

  • Brief added: Questions Presented

    Court records

More questions

1
What did Chief Justice Roberts argue?
He argued that Congress changed the rules for one pending case in a way that could determine its outcome, a decision he said the Constitution assigns to courts.

Sources

Primary materials plus reporting. Best-effort analysis: this explainer relies on a mix of primary materials and trusted secondary sources. Official filings and opinions remain authoritative.

Checked Oct 18, 2026Methodology

Court records and filings

Reporting and analysis