LOUIS beta search engine of federal documents

LOUIS - the Library Of Unified Information Sources ( in beta testing) - is a free search engine of federal documents from the Sunshine Foundation. LOUIS makes it easy to search from a collection of over 300,000 documents from seven sets of federal documents dating back to 2001:

1. the Congressional Record
2. Congressional bills and resolutions
3. Congressional reports
4. Congressional hearings
5. GAO reports
6. Presidential documents
7. the Federal Register

LOUIS, which updates its document depository daily, even allows you to set up a "standing query" as an RSS feed, to get alerts every time Congress or the executive branch takes action that references the subject of the initial query. There's a screencast available on its homepage to help familiarize you with the site.