Begin Step-by-Step Research -- Research Tips
You might find the following useful as part of your research:
CIS Index: Legislative Histories -- U.S. Documents Reference KF 49 .C62 (1969+)
(1984+) provides very helpful summaries of legislative histories for Public Laws passed since 1984. The same information is available online using ProQuest Congressional, but a photocopy of the print version usually provides a descriptive checklist more concisely than printouts of the descriptions behind each of the links in the online version.
(1969-1983) Basic checklists for legislative histories of Public Laws passed between 1969 and 1983 are available online and in the back of the Abstract volumes of the print version.
See also CCH Congressional Index -- Reference J 69 .C6 (1969+).
The UCF Library has the full text available on microfiche for almost all of the publications cited in this index.
Online access to committee reports and Congressional Record debates is common, but retrieving the full text of most hearings will require using the microfiche.
ProQuest Congressional often includes a link within the hearing description to "Retrieve the full text of testimony", but it usually doesn't include the testimony of all witnesses. It also doesn't include the supplementary materials from the hearing, which often can be the most helpful material available in the hearing.
Although ProQuest Congressional does not have the full text of hearings, the full text of some (NOT ALL) hearings published since 1997 might be available through other sources.
The bill became a law, so support for it obviously existed. It is sometimes more difficult to determine what, if any, opposition existed.