Cassirer v. Thyssen-Bornemisza Collection Foundation

Cassirer v. Thyssen-Bornemisza Collection Foundation, 596 U.S. ___ (2022), was a United States Supreme Court case in which the Court held that, in a suit raising non-federal claims against a foreign state or instrumentality under the Foreign Sovereign Immunities Act, a court should determine the substantive law by using the same choice-of-law rule applicable in a similar suit against a private party.^[1][2]

Cassirer v. Thyssen-Bornemisza Collection Foundation
Supreme Court of the United States
Decided April 21, 2022
Full case name	Cassirer v. Thyssen-Bornemisza Collection Foundation
Docket no.	20-1566
Citations	596 U.S. ___ (more)
Holding
In a suit raising non-federal claims against a foreign state or instrumentality under the Foreign Sovereign Immunities Act, a court should determine the substantive law by using the same choice-of-law rule applicable in a similar suit against a private party.
Court membership
Chief Justice John Roberts Associate Justices Clarence Thomas · Stephen Breyer Samuel Alito · Sonia Sotomayor Elena Kagan · Neil Gorsuch Brett Kavanaugh · Amy Coney Barrett
Case opinion
Majority	Kagan, joined by unanimous
Laws applied
Foreign Sovereign Immunities Act