Arnold & Porter

Arnold & Porter’s team regularly handles complex matters for national and leading multinational corporates with a raft of experience in state, federal, and international courts. Investor-state disputes are a key part of the practice that is further noted for its handling of intricate matters under ATA, TVPA, AT, and FSIA legislation. The practice counts banks, energy companies, foreign sovereigns, and medical companies notably including Pfizer and AstraZeneca amongst its clients, and is commended for its anti-corruption capabilities, heralding experience with the Foreign Corrupt Practices Act and UK Bribery Act. Washington DC based Kenneth Chernof  brings extensive experience to the practice, acting as the co-chair of complex litigation alongside James Herschlein, who operates out of New York. In the same office, Marcus Asner maintains a focus on investigations work. Experienced arbitrators Paolo Di Rosa, also in DC, and San Francisco-based Maria Chedid are noted within the team, frequently representing sovereign states and private sector companies domestically and internationally. The department continues to grow, with the arrival of Deborah Curtis from the CIA, and Stephen Cha-Kim from the US Attorney’s Office for the Southern District of New York. Amy Jeffress left the firm in February 2025.