U.S.C.A. Acronym for United States Code, or United States Code Annotated. The U.S.C. is a comiplation of federal laws, organized ("codified") into 50 subject sections, called "Titles", and published by the United States government. For instance, "Title 17" contains the copyright statutes. The USCA contains the full text and same organization as the USC, but also includes notes about case law, legislative history, etc. When referring to individual sections in a particular title, the short format is "17 U.S.C. § 101".