Topic
- Vice-Presidents10
- World War, 1914-191810
- Democratization9
- Race relations9
- Budget8
- Commerce8
- Conservatism8
- Economic assistance, American8
- Education and state8
- Elections8
- Energy policy8
- Health care reform8
- Inauguration8
- Infrastructure (Economics)8
- Job creation8
- Nuclear nonproliferation8
- Political activity8
- Security, International8
- Terrorism8
- Death and burial7