The Ninety-First Congress of the United States convened from January 3, 1969, to January 3, 1971. It was composed of the Senate and the House of Representatives, with significant events occurring during its sessions, including the passage of important legislation related to civil rights, education, and health care. During this Congress, the Democratic Party held a majority in both chambers. Key legislation included the National Environmental Policy Act and the Public Health Service Act. The Ninety-First Congress also dealt with issues surrounding the Vietnam War and the growing concerns about environmental protection and social welfare programs.