How do the Federal Register rulemaking documents posted on this site apply?
The documents from the Federal Register posted here have been provided for guidance purposes. Agencies publish notices, changes, and proposed changes to their rules in the Federal Register. Documents in the Federal Register often contain a discussion of the guidance or changes being offered. The Federal Register documents posted here are for guidance purposes and offered because they address issues not expressly discussed in the regulation. Generally, this material is located in the preamble, which is the text found in the beginning of a regulatory document under the heading “Supplementary Information.” You should be aware that over the years the Buy America regulations have changed. The documents linked here are provided for the interpretive language in their preambles and should always be read in light of the most current regulations. An example is the domestic content requirement for rolling stock, which was not raised to its current 60% until 1992; there are useful discussions pert
