As of September 22, 2019, the turnover rate among senior White House aides had reached 80 percent, a rate that exceeded President Trumps five predecessors after their entire first terms in office. As of January 2020, over 1/3 of the offices experiencing turnover had more than two occupantsin some cases, as many as six. The most upheaval has occurred in the NSC, a highly influential office that provides the president with advice on national security and foreign policy issues and coordinates these policies with other key departments and agencies.”]