| Health Issues | Health Issues | 109 |
| Tobacco | Tobacco | 90 |
| Medicare/Medicaid | Medicare/Medicaid | 85 |
| Marine/Maritime/Boating/Fisheries | Marine/Maritime/Boating/Fisheries | 53 |
| Homeland Security | Homeland Security | 43 |
| Railroads | Railroads | 34 |
| Taxation/Internal Revenue Code | Taxation/Internal Revenue Code | 29 |
| Budget/Appropriations | Budget/Appropriations | 14 |
| Education | Education | 11 |
| Disaster Planning/Emergencies | Disaster Planning/Emergencies | 10 |
| Defense | Defense | 10 |
| Labor Issues/Antitrust/Workplace | Labor Issues/Antitrust/Workplace | 9 |
| Agriculture | Agriculture | 7 |
| Pharmacy | Pharmacy | 7 |
| Energy/Nuclear | Energy/Nuclear | 6 |
| Economics/Economic Development | Economics/Economic Development | 5 |
| Transportation | Transportation | 5 |
| Consumer Issues/Safety/Products | Consumer Issues/Safety/Products | 4 |
| Natural Resources | Natural Resources | 2 |
| Foreign Relations | Foreign Relations | 2 |