1 ene 1947 año - 1947 - The Taft-Hartley Act curtailed the power of unions that had been granted under the Wagner Act, limiting the activities a union could engage in as part of its collective bargaining. Among other practices, it prevented unions from demanding specific jobs and prohibited union workers from striking without the approval of their leadership. The Taft-Hartley Act also made closed shops illegal, and required union leaders to sign anti-Communist papers, heralding the rise of an era of conservatism and anti-Co