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Gregory Cui

Supreme Court & Appellate Counsel

Supreme Court & Appellate Program

Washington, D.C.

gregory.cui@macarthurjustice.org (202) 869-3751

Areas of Focus

Holding Police and Prosecutors Accountable Access to Courts Advocating for the Rights of the Incarcerated Solitary Confinement

Greg Cui is a Counsel for the Supreme Court and Appellate Program at the MacArthur Justice Center. He identifies and litigates strategic civil rights and criminal justice cases in federal courts across the country, including the U.S. Supreme Court. His docket covers a broad range of issues, including qualified immunity, sovereign immunity, restrictions on federal habeas corpus, the Prison Litigation Reform Act, and state and federal constitutional law relating to prisons, policing, and punishment. As a senior attorney, Greg supervises case teams and trains junior attorneys serving as legal fellows. Greg also teaches a legal practice course at the University of Virginia School of Law.

Prior to joining MacArthur, Greg was an associate in the Supreme Court and Appellate practice group at Sidley Austin LLP. At Sidley, Greg briefed high-stakes appeals in federal court on a number of complex issues. He also led a team of pro bono attorneys who partnered with the National Immigrant Justice Center to bring a strategic lawsuit challenging the federal government’s detention of noncitizens in appalling conditions at a county jail in Indiana. For his work, NIJC honored Greg with the Rising Star Award in 2023.

Greg previously served as a law clerk to Justice Sonia Sotomayor of the U.S. Supreme Court. He also served as a law clerk to Judge William A. Fletcher of the U.S. Court of Appeals for the Ninth Circuit, and for Judge Jesse M. Furman on the U.S. District Court for the Southern District of New York. Greg earned his J.D. from Yale Law School and his B.A. from Rutgers University – New Brunswick.

  • Representing Michael Bowe as co-counsel with the Federal Defender’s Office before the U.S. Supreme Court in Bowe v. United States, No. 24-5438, which will be heard in OT25. Docket available on the Supreme Court’s website.  
  • Prevailing in an appeal to the Second Circuit on behalf of a client who was arrested at the door of his home and maliciously prosecuted for insisting the police produce a warrant, in Thompson v. New York, No. 23-900, 2024 WL 2720230 (2d Cir. May 28, 2024). Oral argument audio available on the Second Circuit’s website.   
  • Prevailing in an appeal to the Eighth Circuit concerning the Prison Litigation Reform Act on behalf of a client who was denied medical care and, as a result, went into sepsis and end-stage renal failure, in Perry v. Precythe, 121 F.4th 711 (8th Cir. 2024). Oral argument audio available on the Eighth Circuit’s website.  
  • Prevailing in an appeal to the Ninth Circuit on a federal claim of First Amendment retaliation on behalf of a client who was threatened with transfer because he had filed grievances, in Harbridge v. Reed, No. 22-55861, 2024 WL 4719083 (9th Cir. Nov. 8, 2024). Oral argument audio available on the Ninth Circuit’s website.  
  • Prevailing in an appeal to the Eleventh Circuit on a federal claim of malicious prosecution on behalf of a client who was targeted for harassment and arrest for making fun of a police officer, in Buress v. Miami, No. 23-12895, 2024 WL 3666076 (11th Cir. Aug. 6, 2024).  
  • Authoring an amicus brief on behalf of criminal law and punishment scholars that was cited by Justice Sotomayor in her dissent in Grants Pass v. Johnson, 603 U.S. 520 (2024).  

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