| Item | Count | Percent |
| Total | 177 | 100.0 |
| Weak or insufficient admissible evidence | 49 | 27.7 |
| Suspect to be prosecuted by other authorities | 36 | 20.3 |
| Suspect being prosecuted on other charges (e.g., UFAPs) | 15 | 8.5 |
| Agency request | 14 | 7.9 |
| Lack of evidence of criminal intent | 8 | 4.5 |
| Lack of investigative or prosecutive resources | 7 | 4.0 |
| Office policy/Dept policy | 5 | 2.8 |
| Minimal federal interest or no deterrent value | 4 | 2.3 |
| No federal offense evident | 1 | 0.6 |
| All other | 38 | 21.5 |