| Item | Count | Percent |
| Total | 239 | 100.0 |
| Lack of investigative or prosecutive resources | 89 | 37.2 |
| Suspect to be prosecuted by other authorities | 41 | 17.2 |
| Weak or insufficient admissible evidence | 28 | 11.7 |
| Lack of evidence of criminal intent | 21 | 8.8 |
| Civil, admin or other disciplinary alternatives | 16 | 6.7 |
| Minimal federal interest or no deterrent value | 9 | 3.8 |
| No federal offense evident | 7 | 2.9 |
| Agency request | 2 | 0.8 |
| Suspect being prosecuted on other charges (e.g., UFAPs) | 1 | 0.4 |
| All other | 25 | 10.5 |