| Item | Count | Percent |
| Total | 16 | 100.0 |
| Weak or insufficient admissible evidence | 6 | 37.5 |
| Lack of evidence of criminal intent | 3 | 18.8 |
| Minimal federal interest or no deterrent value | 3 | 18.8 |
| Civil, admin or other disciplinary alternatives | 1 | 6.3 |
| Suspect to be prosecuted by other authorities | 1 | 6.3 |
| All other | 2 | 12.5 |