Christina Duffy Ponsa

George Welwood Murray Professor of Legal History

Office: Jerome Greene Hall 913
435 West 116th Street
New York NY 10027
Tel: 212.854.6579
Fax: 212.854.7946

Assistant Info

Name: Rosa Arenas
Phone: 212-854-0696

Please note that Professor Ponsa changed her name from Christina Duffy Burnett.

Areas of Expertise

  • American legal history
  • Constitutional law


  • B.A., History and Latin American Studies, Princeton, 1990
  • M.Phil., Political Thought and Intellectual History, Cambridge, 1995
  • J.D., Yale, 1998
  • Ph.D., History, Princeton, 2010
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Detailed Biography:

    Christina Duffy Ponsa's work focuses on American legal history. She is the co-editor of Foreign in a Domestic Sense: Puerto Rico, American Expansion, and the Constitution (Duke University Press, 2001), and the author of several articles and essays on the constitutional implications of American territorial expansion. She is currently at work on a constitutional and international legal history of American empire in the late nineteenth and early twentieth centuries. Professor Ponsa holds degrees from Princeton (A.B. 1990, Ph.D. 2010), Cambridge (M.Phil. 1995), and Yale (J.D. 1998). Before joining the Columbia faculty in 2007, she served as a law clerk to Judge José A. Cabranes on the Second Circuit Court of Appeals and to Justice Stephen G. Breyer on the United States Supreme Court.