Google Government Search

Google Introduces U.S. Government Search Site

The "site is designed to offer a single location for searching across U.S. government information, and for keeping up-to-date on government news. It includes U.S. federal, state, and local sites with domains such as .gov and .mil as well as select government sites with .com, .us, and .edu domains (e.g., .usps.com, .ca.us, and ndu.edu). It also includes news from other sites like WashingtonPost.com.

From InfoToday's Newslink

Note: Much more comprehensive than Google Uncle Sam which searched .mil and .gov sights only.