Congressional Budget Office on the national deficit. (You can read the full report at their site.) There's a lot of good information there, but a researcher might still be wondering, what does it mean? What is all the talk one hears about Kensyian economics and supply side economics? Is a government running a deficit like a household running one?
Look for books in our catalog or search for articles in a database like Business Source Complete, the best place for business and economics research. Don't forget our research guide to the U.S. Government either :-)