| Foreign Relations | Foreign Relations | 58 |
| Government Issues | Government Issues | 23 |
| Defense | Defense | 20 |
| Economics/Economic Development | Economics/Economic Development | 17 |
| Trade (domestic/foreign) | Trade (domestic/foreign) | 17 |
| Marine/Maritime/Boating/Fisheries | Marine/Maritime/Boating/Fisheries | 12 |
| Real Estate/Land Use/Conservation | Real Estate/Land Use/Conservation | 12 |
| Railroads | Railroads | 11 |
| Aviation/Airlines/Airports | Aviation/Airlines/Airports | 6 |
| Homeland Security | Homeland Security | 5 |
| Trucking/Shipping | Trucking/Shipping | 5 |
| Pharmacy | Pharmacy | 5 |
| Transportation | Transportation | 5 |
| Banking | Banking | 4 |
| Aerospace | Aerospace | 4 |
| Law Enforcement/Crime/Criminal Justice | Law Enforcement/Crime/Criminal Justice | 4 |
| Immigration | Immigration | 4 |
| Telecommunications | Telecommunications | 4 |
| Natural Resources | Natural Resources | 3 |
| Fuel/Gas/Oil | Fuel/Gas/Oil | 2 |