the need to dismantle segregation, job losses in agriculture, particularly among African Americans was a major reason for the civil rights movement, culminating in the March on Washington for Jobs and Freedom led by Martin Luther King Jr. Although Roosevelt's Executive Order 8802 of 1941 had prohibited racial discrimination in the national defense industry, people still suffered discrimination because of their skin color across other workplaces. Also, despite the increasing numbers of women in work, sex discrimination was endemic. The government of John F. Kennedy introduced the Equal Pay Act of 1963, requiring equal pay for women and men. Lyndon B. Johnson introduced the Civil Rights Act of 1964, finally prohibiting discrimination against people for "race, color, religion, sex, or national origin." Slowly, a new generation of equal rights laws spread. At federal level, this included the Age Discrimination in Employment Act of 1967, the Pregnancy Discrimination Act of 1978, and the Americans with Disabilities Act of 1990, now overseen by the Equal Employment Opportunity Commission. Although people, in limited fields, could claim to be equally treated, the mechanisms for fair pay and treatment were dismantled after the 1970s. The last major labor law statute, the Employee Retirement Income Security Act of 1974 created rights to well regulated occupational pensions, although only where an employer had already promised to provide one: this usually depended on collective bargaining by unions. But in 1976, the Supreme Court in Buckley v Valeo held anyone could spend unlimited amounts of money on political campaigns, as a part of the First Amendment right to "freedom of speech". After the Republican President Reagan took office in 1981, he dismissed all air traffic control staff who went on strike, and replaced the National Labor Relations Board members with pro-management men. Dominated by Republican appointees, the Supreme Court suppressed labor rights, removing rights of professors, religious school teachers, or illegal immigrants to organize in a union, allowing employees to be searched at work, and eliminating employee rights to sue for medical malpractice in their own health care. Only limited statutory changes were made. The Immigration Reform and Control Act of 1986 criminalized large numbers of migrants. The Worker Adjustment and Retraining Notification Act of 1988 guaranteed workers some notice before a mass termination of their jobs. The Family and Medical Leave Act of 1993 guaranteed a right to 12 weeks leave to take care for children after birth,