For some of your assignments you may need to track down a specific policy or law or the background (legislative history) of the law. There are several good choices for this depending on where you are starting and what you are trying to find.
Here is one database that focuses exclusively on U.S. Congress' activities: ProQuest Congressional
Here is a link to a comprehensive listing of U.S. government agencies and their publications.
Click here for a comprehensive guide to international government resources. Also, once you have identified key organizations, use Google to search for their web sites, which often contain important reports and documents. For best results, put quotation marks around the name of the organization, e.g.,