Beta.congress.gov is the official source for federal legislative information. It replaces the nearly 20-year-old THOMAS.gov site with a system that includes platform mobility, comprehensive information retrieval and user-friendly presentation. It currently includes all data sets available on THOMAS.gov except nominations, treaties and communications. These data sets will be added throughout 2014.
- Ada S. Cornell, Laura A. Hanson & Michael Greene, "Legislative Research for Congressional Staff: How to Find Documents and Other Resources" 10 (Mar. 25, 2014) (full-text).