Covert Careers: Jobs You Can't Talk About: Inside the Secret Service
Checks and Balances in the U.S. Government: The U.S. Constitution and the Separation of Powers
Covert Careers: Jobs You Can't Talk About: Inside the DEA
Covert Careers: Jobs You Can't Talk About: Inside the CIA
Covert Careers: Jobs You Can't Talk About: Inside the FBI
Covert Careers: Jobs You Can't Talk About: Inside Interpol
Checks and Balances in the U.S. Government: The Legislative Branch: Making Laws
Weapons of Mass Destruction: The Essential Reference Guide
Special Reports Set 3: US Immigration Policy
Understanding the Executive Branch: Inside the Department of Commerce
Understanding the Executive Branch: Inside the Department of Transportation
Real-World STEM: Global Access to Clean Water
U.S. Immigration Policy, Ethnicity, and Religion in American History
Spying, Surveillance, and Privacy in the 21st-Century: Surveillance and Your Right to Privacy
Women and War in the 21st Century: A Country-by-Country Guide
Understanding the Executive Branch: Inside the Department of Labor
Money in American Politics: An Encyclopedia
Current Controversies: The Border Wall with Mexico