Now that we've talked about researching very new and even pending legislation, let's turn our attention to how to research the history of a law and why we would want to do this.
But regardless of this criticism, legislative history research is a very common thing. So let's talk about what's involved so that you're prepared:
Main documents important for legislative history research
These are the main documents involved in passing legislation however there can be others as well.
So where can you go to start finding all of these different documents when conducting legislative history reserach?
Well you can go to the primary source on free websites such as congress.gov and govinfo, CRS - Congressional Research Service - reports, and there are paid services such as Proquest Congressional which have most of the legislative documents, and then there are print sources such as USCCAN which are Printed committee reports for most statutes, these are also available on major platforms such as Westlaw and Lexis.
Compiled Legislative Histories
And then there are sources which have done the legwork for you. There are many laws which have already had legislative histories compiled for them containing all of the documents included in the legislative process.
The Librarians' Society of Washington DC (LLSDC) has put together massive lists of compiled legislative histories and the laws they pertain to. The first list indexes all of the legislative histories that can be found on commercial websites and the second contains only those available on free outlets such as HathiTrust.
Here are a couple of screenshots of the LLSDC lists of commercial and free sources, you can see the laws listed begin with PL which stands for Public Law.
Librarians' Society of Washington DC (LLSDC): https://www.llsdc.org/
Here are over 12,000 legislative histories provided through Proquest Congressional and on the right just one legislative history, you can see all of the different related documents provided.
Proquest Congressional - https://congressional.proquest.com/help/congressional/leghistpt_cpt.html