| Item | Count | Percent |
| Total | 29 | 100.0 |
| Weak or insufficient admissible evidence | 9 | 31.0 |
| No federal offense evident | 7 | 24.1 |
| Suspect being prosecuted on other charges (e.g., UFAPs) | 4 | 13.8 |
| Suspect to be prosecuted by other authorities | 4 | 13.8 |
| Civil, admin or other disciplinary alternatives | 2 | 6.9 |
| Lack of evidence of criminal intent | 1 | 3.4 |
| All other | 2 | 6.9 |