Penn State Libraries
Federal Depository Library since 1858
U.S. Federal statutes are published in 3 iterations:
U.S. Federal statutes are divided into:
In print in the Libraries:
Public Law number
Follows the pattern:
P.L. [Congress number] - [Act number]
P.L. 110-84 is the 84th Public Law passed by the 110th Congress.
U.S. Statutes at Large
Follows the pattern:
[volume number] STAT. [page number]
121 STAT. 784: Find the text of P.L. 110-84 as it was passed on page 784 of volume 121 of the U.S. Statutes at Large.
U.S. Code
Follows the pattern:
[title number] USC [section number]
20 USC 1015a points to Section 1015a of Title 20 of the United States Code.
You may also see the U.S. Code citation with punctuation, as in 42 U.S.C. §1396. The § is the symbol for the word section.
The U.S. Code is the official publication of laws currently in force. It is published by the U.S. Government Publishing Office.
Another common U.S. Code citation is U.S.C.A. (or USCA), as in 42 U.S.C.A. §1396. This abbreviation stands for United States Code Annotated.
Similarly, U.S.C.S. (or USCS) stands for United States Code Service.
Both the USCA and USCS are commercially published. Though not official government publications, both publish the U.S. Code with updates and annotations helpful to researchers.