Free public access to United States government documents in a federal depository library is guaranteed by law (44 USC §1911). While UC Berkeley houses one of the most comprehensive collections of U.S. government documents in the country, the Library is one of over a thousand Federal Depository Libraries across the United States, and one of several Federal Depository Libraries in the San Francisco Bay Area.
This is a starter list to finding textual data from and about the U.S. Government.