- Introduced in the House as H.R. 3477 by Al Ullman (D–OR) on February 16, 1977
- Committee consideration by House Ways and Means, House Appropriations, Senate Finance
- Passed the House on March 8, 1977 (282-131, in lieu of H.Res. 360)
- Passed the Senate on April 29, 1977 (73-7)
- Reported by the joint conference committee on May 6, 1977; agreed to by the House on May 16, 1977 (252-134) and by the Senate on May 16, 1977 (Agreed)
- Signed into law by President Jimmy Carter on May 23, 1977
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