Persistent URLs for Legislation
The Library of Congress website THOMAS, which provides information about U.S. legislation, has established a system of persistent URLs for legislative documents. This means that hyperlinks using this format will always (i.e. for the foreseeable future) take a reader to the desired document, regardless of any server changes that might have occurred since the link was created.
The persistent link is created by following a syntax that assembles a document’s URI. (A “uniform resource identifier” is a unique string of characters that is used to identify a particular resource on the internet; a URL — “uniform resource . . . [more]
