| Item | Count | Percent |
| Total | 32 | 100.0 |
| Suspect to be prosecuted by other authorities | 6 | 18.8 |
| Lack of evidence of criminal intent | 5 | 15.6 |
| Weak or insufficient admissible evidence | 5 | 15.6 |
| Agency request | 4 | 12.5 |
| No federal offense evident | 3 | 9.4 |
| Lack of investigative or prosecutive resources | 2 | 6.3 |
| All other | 7 | 21.9 |