| Clean Air and Water (quality) | Clean Air and Water (quality) | 76 |
| Copyright/Patent/Trademark | Copyright/Patent/Trademark | 23 |
| Energy/Nuclear | Energy/Nuclear | 14 |
| Utilities | Utilities | 14 |
| Budget/Appropriations | Budget/Appropriations | 7 |
| Government Issues | Government Issues | 7 |
| Education | Education | 6 |
| Telecommunications | Telecommunications | 6 |
| Defense | Defense | 5 |
| Environment/Superfund | Environment/Superfund | 2 |
| Labor Issues/Antitrust/Workplace | Labor Issues/Antitrust/Workplace | 2 |
| Transportation | Transportation | 2 |
| Commodities (big ticket) | Commodities (big ticket) | 1 |
| Homeland Security | Homeland Security | 1 |
| Economics/Economic Development | Economics/Economic Development | 1 |
| Waste (hazardous/solid/interstate/nuclear) | Waste (hazardous/solid/interstate/nuclear) | 1 |
| Roads/Highway | Roads/Highway | 1 |