| Item | Count | Percent |
| Total | 51 | 100.0 |
| Weak or insufficient admissible evidence | 14 | 27.5 |
| Suspect to be prosecuted by other authorities | 10 | 19.6 |
| Lack of evidence of criminal intent | 6 | 11.8 |
| Agency request | 5 | 9.8 |
| Suspect being prosecuted on other charges (e.g., UFAPs) | 4 | 7.8 |
| No federal offense evident | 3 | 5.9 |
| Minimal federal interest or no deterrent value | 2 | 3.9 |
| All other | 7 | 13.7 |