| Science/Technology | Science/Technology | 47 |
| Computer Industry | Computer Industry | 44 |
| Homeland Security | Homeland Security | 39 |
| Budget/Appropriations | Budget/Appropriations | 19 |
| Immigration | Immigration | 17 |
| Transportation | Transportation | 17 |
| Consumer Issues/Safety/Products | Consumer Issues/Safety/Products | 14 |
| Aviation/Airlines/Airports | Aviation/Airlines/Airports | 12 |
| Communications/Broadcasting/Radio/TV | Communications/Broadcasting/Radio/TV | 7 |
| Environment/Superfund | Environment/Superfund | 6 |
| Waste (hazardous/solid/interstate/nuclear) | Waste (hazardous/solid/interstate/nuclear) | 6 |
| Copyright/Patent/Trademark | Copyright/Patent/Trademark | 6 |
| Government Issues | Government Issues | 4 |
| Insurance | Insurance | 2 |
| Travel/Tourism | Travel/Tourism | 2 |
| Telecommunications | Telecommunications | 2 |
| Banking | Banking | 1 |