Policy Papers and Newspapers can also be primary sources, depending on how you use them. The resources listed on the more comprehensive Primary Sources may be useful, too.
Translations or transcriptions of intercepted radio broadcasts from foreign governments, official news services, and clandestine broadcasts from occupied territories
Official documentary historical record of major U.S. foreign policy decisions and significant diplomatic activity.
Legal research database, with numerous libraries covering congressional publications, law publications, treaties, etc.
Collection of documents related to Homeland Security from variety of sources including federal, state and local agencies