In 2017, Bill Browder testified before the Senate Judiciary Committee that representatives of Vladimir Putin had hired "Howard Schweitzer of Cozen O'Connor Public Strategies and former Congressman Ronald Dellums to lobby members of Congress on Capitol Hill to repeal the Magnitsky Act and to remove Sergei's name from the Global Magnitsky bill." The bill is named for the Russian lawyer who was murdered in prison for pursuing the corruption of Putin's allies. Browder also worked with the Human Rights Accountability Global Initiative to oppose sanctions on Russia.