Library of Congress - How to Trace Federal Legislation - A Research GuideAny given provision in the current U.S. Code may be the product of multiple acts passed over a long period of time. So, how do you unpack the provision and discover the different acts that gave rise to a particular section of the Code? Tracing legislation from the Code back to the bills, public laws, and Statutes at Large that created it may seem daunting for the uninitiated, but we hope this research guide will help simplify the process.