As a US District Judge in the Central District, Judge Larson presided over a number of high-profile cases, including United States v. Nazario, a landmark Military Extraterritoriality Jurisdiction Act case involving US Marines accused of manslaughter during the Battle of Fallujah in Iraq, and United States v. Duro, in which he blocked the US Bureau of Indian Affairs’ decade long effort to close down and expel a major migrant worker camp on the Torres Martinez Indian Reservation in the Coachella Valley, home to thousands of migrant farm workers, and turned the operation of the settlement over to a court-appointed receiver. He also negotiated, approved, and supervised the consent decree entered into by the County of San Bernardino in John Doe v. County of San Bernardino, which resulted in systematic reform of educational and therapeutic services for disabled youths within the county juvenile hall system, as well as determined the ownership of the copyrights to the iconic comic strip Superman in Siegel v. Warner Bros. Entertainment, Inc. While serving on the federal bench, Judge Larson also sat by designation on the US Court of Appeals for the Ninth Circuit, participating in approximately 40 decisions.
Judge Larson shares a strong interest and an active involvement in promoting the rule of law in developing countries. Along with Arent Fox partner Robert O’Brien, he was a founding member of and continues to serve on the executive board of the US Department of State’s Public-Private Partnership for Justice Reform in Afghanistan, traveling to that war-torn nation to meet judges, prosecutors, and other government officials and hosting several Afghan delegations for training in the United States, including the Afghan Women Lawyers Program in 2009 which included meetings with the Secretary of State Hillary Clinton and former Supreme Court Justice Sandra Day O’Connor. While serving as chief of the organized crime section of the US Attorney’s Office in Los Angeles, Judge Larson worked with foreign law enforcement agencies conducting joint training exercises investigations that took him to Russia (including Moscow, Irkutsk, and Vladivostok), Kazakhstan, Estonia, Latvia, Poland, the Ukraine, and South Korea. As a federal judge he was actively involved in promoting the rule of law and combating corruption in Uzbekistan, Croatia, and Rwanda.