together sanctions against Russia, Iran and North Korea. In July 2017, Cotton co-sponsored the bipartisan Israel Anti-Boycott Act (S.270), which amended existing federal law that criminalized foreign-led boycotts of U.S. allies, by specifically prohibiting support to foreign governments or organizations imposing a boycott on Israel. The proposal generated controversy as some interpreted the law as a restriction on activities by private citizens and potentially a violation of constitutional rights. Others viewed it as a clarification of the existing Export Administration Act of 1979 in response to the 2016 United Nations Human Rights Council resolutions that called on corporations to reassess business activities that may impact Palestinian human rights. In December 2018, after Trump announced the withdrawal of American troops in Syria, Cotton was one of six senators to sign a letter expressing concern about the move and their belief "that such action at this time is a premature and costly mistake that not only threatens the safety and security of the United States, but also emboldens ISIS, Bashar al Assad, Iran, and Russia." In January 2019, Cotton was one of 11 Republican senators to vote to advance legislation intended to block Trump's intent to lift sanctions against three Russian companies. In August 2019, it was reported that Cotton had suggested to Trump and the Danish ambassador that the U.S. should buy Greenland. Cotton supports U.S. withdrawal from the Open Skies agreement, which lets nations use special aircraft to monitor each other's military activities. In 2018, he asserted that the agreement was outdated and that it favored Russian interests. China In 2018, Cotton was a cosponsor of the Countering the Chinese Government and Communist Party's Political Influence Operations Act, a bill introduced by Marco Rubio and Catherine Cortez Masto that would grant the U.S. secretary of state and the director of national intelligence (DNI) the authority to create an interagency task force with the purpose of examining attempts by China to influence the U.S. and key allies. In August 2018, Cotton and 16 other lawmakers urged the Trump administration to impose sanctions under the Global Magnitsky Act against Chinese officials who are responsible for human rights violations in western China's Xinjiang region targeting the Uyghur ethnic minority. They wrote in a bipartisan letter, "The detention of as many as a million or more Uyghurs and other predominantly Muslim ethnic minorities in 'political reeducation' centers or camps requires a tough, targeted, and