| Defense | Defense | 151 |
| Aviation/Airlines/Airports | Aviation/Airlines/Airports | 22 |
| Budget/Appropriations | Budget/Appropriations | 20 |
| Transportation | Transportation | 15 |
| Homeland Security | Homeland Security | 15 |
| Marine/Maritime/Boating/Fisheries | Marine/Maritime/Boating/Fisheries | 10 |
| Manufacturing | Manufacturing | 10 |
| Trade (domestic/foreign) | Trade (domestic/foreign) | 9 |
| Economics/Economic Development | Economics/Economic Development | 9 |
| Foreign Relations | Foreign Relations | 9 |
| Trucking/Shipping | Trucking/Shipping | 9 |
| Law Enforcement/Crime/Criminal Justice | Law Enforcement/Crime/Criminal Justice | 8 |
| Urban Development/Municipalities | Urban Development/Municipalities | 7 |
| Travel/Tourism | Travel/Tourism | 7 |
| Real Estate/Land Use/Conservation | Real Estate/Land Use/Conservation | 6 |
| Aerospace | Aerospace | 6 |
| Roads/Highway | Roads/Highway | 4 |
| Education | Education | 3 |
| Environment/Superfund | Environment/Superfund | 3 |
| Energy/Nuclear | Energy/Nuclear | 2 |