Bank Markazi v. United States: Separation of Powers and Retroactive Legislation
The legal battle in Bank Markazi v. United States centered on a fundamental constitutional question: Can Congress pass a law that specifically targets a single pending court case to change its outcome? This clash pitted the legislative power to regulate foreign affairs against the judicial independence guaranteed by Article III of the U.S. Constitution.
At the heart of the dispute was Section 8772, a statute designed to make certain assets available for execution against judgments against Iran. The case forced the Supreme Court to determine if this law was a valid exercise of legislative authority or an unconstitutional encroachment on the judiciary's role to "say what the law is."
Key Facts
- The Core Issue: Whether Section 8772 violated the separation of powers by directing the outcome of a specific pending case.
- Majority Ruling: The Court held that Section 8772 did not infringe on the separation of powers.
- Legislative Intent: The law established new substantive standards regarding the availability of Iranian assets for judgment execution.
- Foreign Affairs: The Court affirmed Congress's broad authority to regulate foreign-state assets and sovereign immunity.
- Dissent: Chief Justice Roberts argued the law essentially "picked the winner" of the case, bypassing judicial function.
The Majority Opinion: Legislative Authority and Retroactivity
Justice Ruth Bader Ginsburg authored the majority opinion, joined by Justices Kennedy, Thomas, Breyer, Alito, and Kagan (though Justice Thomas did not join Part II-C). The majority grounded its decision in the principle that while Congress cannot usurp a court's power to apply the law to specific circumstances—such as ordering a specific party to win—it can change the substantive law that courts must apply, even in pending cases.

The majority addressed the precedent of United States v. Klein (1871), clarifying that Congress has long been recognized as having the power to make retroactive laws. They noted that retroactive legislation is generally permissible unless it violates specific constitutional constraints, such as the Ex Post Facto Clause, the Takings Clause of the Fifth Amendment, or the Due Process Clause.
Substantive Law vs. Judicial Usurpation
The Court found that Section 8772 did not simply command a victory for the respondents. Instead, it established new substantive standards: if Iran owned the assets, those assets would be available for execution. The majority pointed out that the District Court still had several critical issues to adjudicate, including:
- Defining "beneficial interest" and "equitable title."
- Determining if other parties had constitutionally protected interests in the account.
- Verifying if the assets were actually "held in the United States" (as Clearstream argued they were in Luxembourg).
Authority Over Foreign Affairs
The majority further ruled that Section 8772 was a valid exercise of congressional authority over foreign affairs. Referencing Dames & Moore v. Regan (1981), the Court noted that regulating foreign-state assets—including blocking them or altering their immunity—falls within the prerogative of the political branches. Even though the Foreign Sovereign Immunities Act (FSIA) of 1976 shifted immunity determinations to the courts, Congress retains the power to alter that immunity.
The Dissent: A "Parchment Barrier"
Chief Justice John Roberts, joined by Justice Sonia Sotomayor, issued a sharp dissent. Roberts argued that Section 8772 was a transparent attempt by Congress to decide a particular case in the first instance, which he viewed as a violation of Article III.

To illustrate his point, Roberts used an analogy involving a property dispute. He imagined a scenario where a neighbor sues over a fence, and while the case is pending, the legislature passes a law specifically for that one case that eliminates the defendant's evidence and extends the statute of limitations. Roberts argued that in such a case, the legislature—not the court—decided the outcome.
The History of Judicial Independence
Roberts traced the separation of powers back to the American Revolution, noting that the Framers sought to end the practice of colonial legislatures acting as courts of last resort. He argued that Article III serves as the central pillar of judicial independence to safeguard individual freedom, quoting Alexander Hamilton's assertion in Federalist No. 78 that there is no liberty if the power of judging is not separated from legislative and executive powers.
Critique of the Majority
The Chief Justice dismissed the majority's claim that the District Court still had issues to decide, calling it a "constitutional Maginot Line." He contended that by removing every viable defense, Congress had effectively dictated the result. He warned that this decision provides a "blueprint" for Congress to pick winners and losers in pending litigation, reducing the separation of powers to a mere "parchment barrier."
Summary of Legal Perspectives
| Feature | Majority Opinion (Ginsburg) | Dissenting Opinion (Roberts) |
|---|---|---|
| View of § 8772 | Established new substantive legal standards. | Assumed the role of judge to decide a specific case. |
| Retroactivity | Permissible if not violating specific constitutional clauses. | Unconstitutional when used to dictate a case outcome. |
| Separation of Powers | Preserved; courts still adjudicate key facts. | Violated; Congress effectively "picked the winner." |
| Foreign Affairs | Congress has broad prerogative over sovereign immunity. | Political branches should not "commandeer" the courts. |
Frequently Asked Questions
What was the primary purpose of Section 8772?
Section 8772 was enacted to ensure that certain assets were available for execution against judgments against Iran, effectively altering the legal standards for those specific assets in a pending case.
Can Congress pass laws that apply to a single court case?
According to the majority opinion, yes, provided the law establishes new substantive standards for the court to apply rather than simply ordering a specific party to win the case.
What is the significance of the Foreign Sovereign Immunities Act (FSIA) in this case?
The FSIA generally gives courts the authority to determine the immunity of foreign states. However, the Court ruled that Congress retains the power to alter that immunity through legislation.
Why did Chief Justice Roberts disagree with the majority?
Chief Justice Roberts believed that by eliminating the defendant's defenses in a case-specific statute, Congress had usurped the judicial power and violated the separation of powers established in Article III.
What are the constitutional limits on retroactive legislation?
Retroactive laws are prohibited if they violate the Ex Post Facto Clause (penal legislation), the Contract Clause (impairing obligations of contracts), the Takings Clause (depriving vested property rights without just compensation), or the Due Process Clause.