Answer: Wagner Act.
Step-by-step explanation:
The Wagner bill intended to create a unique independent agency made up of three divisions appointed by the President and approved by the Senate-to strengthen worker rights rather than arbitrate disputes.
The general aim of the Wagner Act was to guarantee employees “the right to self-organization, to grow, merge, or support labor unions, to negotiate collectively through representatives whom they chose, and to take part in collective activities for collective agreement or other mutual support and security."
The Taft-Hartley Act of 1947 weakened the Wagner Act, passed by Congress controlled by Republicans over the veto of Democratic Pres. Harry S. Truman.