Rob Weiner has significant experience as a trial lawyer, appellate advocate and legal strategist in complex litigation.  He is skilled in developing creative legal approaches to bring cases to a quick, cheap and successful resolution. Mr. Weiner’s long experience representing business and sovereign clients in litigation, and his three tours of duty as a government lawyer, have honed his ability to  deal with the regulatory, tactical, and constitutional issues arising when the federal government is or may become a party in litigation.  From 2010-12, Mr. Weiner was Associate Deputy Attorney General at the US Department of Justice, where his principal responsibility was to oversee the defense of the Affordable Care Act.  He also handled sensitive negotiations with a foreign government involving bank secrecy, and dealt with or headed off difficult issues across the range of the Department’s matters.  Mr. Weiner also has served as Senior Counsel in the White House Counsel’s Office, and as an Associate Independent Counsel. 

At Arnold & Porter, Mr. Weiner has litigated major administrative and constitutional cases, served as national coordinating and trial counsel in product liability and toxic tort cases; represented clients in media-intensive Congressional regulatory, criminal and disciplinary investigations, and was lead counsel for the State of Israel in litigation involving national security policies.  In addition, clients frequently seek him out to author briefs in the US Supreme Court and other forums. 


Amarin v. FDA Reaffirms that FDA Restriction of Truthful and Non-Misleading Speech by Pharmaceutical Manufacturers is Unconstitutional
Arnold & Porter Advisory
Administrative Actions to Implement the Affordable Care Act

Testimony before the Subcommittee on Oversight of the House Ways and Means Committee

Suing the Sovereign

Lecture, Georgetown University Law Center

King v. Burwell Symposium

American University

King v. Burwell




The International Who's Who of Product Liability Defense Lawyers 2006-2010
Recognized as a “Champion” in National Law Journal’s list of “Champions, Visionaries & Pioneers” 2009
Washington, DC Super Lawyers 2013 for Civil Litigation; Class Action/Mass Torts; and Appellate


  • AB, Princeton University, 1974, summa cum laude
  • JD, Yale Law School, 1977
  • District of Columbia
  • New York
  • Supreme Court of the United States
  • President (1995-96), General Counsel (1994-95), District of Columbia Bar

  • President, District of Columbia Bar Foundation (2005-2008)

  • Chair, Pro Bono Committee, District of Columbia Bar (2000-2002)

  • Chair, Standing Committee on Pro Bono and Public Service, American Bar Association (2000-2002)

  • Member, Commission on Women in the Profession, American Bar Association (2005-2008)

  • Chair, Standing Committee on Pro Bono Legal Services, Judicial Conference of the District of Columbia Circuit (1996-1997)

  • Member, American Law Institute

  • Product Liability Advisory Council (PLAC): Board of Directors and Member, Case Selection Committee, identifying the cases in which PLAC files amicus briefs.

  • US Court of Appeals for the DC Circuit Advisory Committee on Procedures

  • Board of Governors of the America Bar Association

  • United States Court of Appeals, Second Circuit, The Honorable Henry Abbott Friendly

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