| Transportation | Transportation | 64 |
| Homeland Security | Homeland Security | 38 |
| Trade (domestic/foreign) | Trade (domestic/foreign) | 35 |
| Marine/Maritime/Boating/Fisheries | Marine/Maritime/Boating/Fisheries | 35 |
| Economics/Economic Development | Economics/Economic Development | 34 |
| Real Estate/Land Use/Conservation | Real Estate/Land Use/Conservation | 31 |
| Defense | Defense | 29 |
| Immigration | Immigration | 26 |
| Labor Issues/Antitrust/Workplace | Labor Issues/Antitrust/Workplace | 26 |
| Roads/Highway | Roads/Highway | 25 |
| Natural Resources | Natural Resources | 25 |
| Travel/Tourism | Travel/Tourism | 25 |
| Clean Air and Water (quality) | Clean Air and Water (quality) | 25 |
| Manufacturing | Manufacturing | 24 |
| Medicare/Medicaid | Medicare/Medicaid | 24 |
| Aviation/Airlines/Airports | Aviation/Airlines/Airports | 24 |
| Medical/Disease Research/Clinical Labs | Medical/Disease Research/Clinical Labs | 24 |
| Health Issues | Health Issues | 24 |
| Foreign Relations | Foreign Relations | 24 |
| Railroads | Railroads | 9 |