This site is an excellent source for information on current bills, legislative history, reports and much more. New bills and other legislative information are often added to this site within a day or two. Public Laws Recently anacted laws can be searched here. As with any primary law source found on the Internet or anywhere else, remember to check how current the information is.
Online codes are often a year or more out of date.
Make sure you update your research accordingly. Project Vote Smart Contains lots of information on U.S. elections. Also includes links to offices and agencies of the other federal government branches. The online version is released concurrently with the print editions. Federal Register FedWorld Home Page Documents published by many federal agencies can be located here.