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Stephen Cha-Kim represents global clients in cross-border disputes and in federal and state court litigation across the U.S. From his eight years as an Assistant U.S. Attorney for the Southern District of New York, Stephen brings extensive experience handling all stages of civil litigation, having managed multi-agency investigations of corporate and public entities, obtained numerous trial victories and favorable settlements, and briefed and argued appeals raising issues of first impression.

At SDNY, Stephen led affirmative and defensive matters involving financial and healthcare fraud, and environmental, civil rights, administrative, national security, employment, international, and art law. Among other achievements, he oversaw major enforcement matters related to lead exposure and abatement and manufacturer emissions under the Clear Air Act; bet-the-company False Claims Act investigations and litigation, including helping win, at US$300 million, one of the largest mortgage fraud judgments ever awarded following a jury trial; and significant commercial and intellectual property disputes involving the Departments of State and Defense, the Export-Import Bank, and the Smithsonian Institution. During his government tenure, Stephen was also detailed to the White House as Associate Counsel to the President, advising the Biden Administration on matters related to environmental regulation and litigation.

Stephen has served as an Adjunct Professor at New York University School of Law, co-teaching a course on government civil litigation, and at Fordham Law School (2018-2020), where he taught legal writing. He has also been a faculty member of the Practicing Law Institute.

Stephen was named a Student Marshal at the University of Chicago, the highest undergraduate honor, and was a Donnelley Research Fellow at Cambridge University. He attended Harvard Law School, where he was elected co-president of HLS Lambda. He began his legal career as a Skadden Fellow litigating employment matters in federal and state courts at Make the Road New York, a leading non-profit organization. He subsequently clerked for SDNY U.S. Magistrate Judge James Cott and U.S. District Judge Edmond Chang of the Northern District of Illinois.

Born in Seoul, Stephen speaks Korean, as well as French and Spanish.


Don’t Forget the States: Connecticut Expands Its FCA
Qui Notes: Unlocking the False Claims Act



  • J.D., Harvard Law School, 2011
  • MPhil, Classical Art & Archaeology, University of Cambridge, 2009
  • B.A., Classical Studies, University of Chicago, 2007, Phi Beta Kappa


  • New York
  • U.S. District Court, Southern District of New York
  • U.S. District Court, Eastern District of New York
  • U.S. Court of Appeals for the Second Circuit

Government & Military Service

  • Assistant U.S. Attorney, U.S. Attorney’s Office for the Southern District of New York (2015-2023)

  • Associate Counsel to the President, The White House Counsel's Office (July 2021-January 2022)


  • U.S. District Court, Northern District of Illinois, The Honorable Edmond E. Chang
  • U.S. District Court, Southern District of New York, The Honorable James L. Cott


  • Adjunct Professor, New York University School of Law (2018-2023)


  • Korean
  • French
  • Spanish