During the 1960s, a boycott on grapes was started by one of these organizations led by Cesar Chavez.
O.B. Coppage's joining one of these organizations was at the center of the Supreme Court case Adair v. United States, which was later invalidated by the Norris-La Guardia Act. Harry Truman's veto was overriden to pass the (*) Taft-Hartley Act, which greatly reduced the power of these organizations. Membership in these groups was prohibited in yellow dog contracts, and Samuel Gompers notably led one of them. During the 1960s, a boycott on grapes was started by one of these organizations led by Cesar Chavez. For 10 points, name these organizations which lobby on behalf of employees, such as the United Farm Workers or AFL.
O.B. Coppage's joining one of these organizations was at the center of the Supreme Court case Adair v. United States, which was later invalidated by the Norris-La Guardia Act.
labor unions