| Item | Count | Percent |
| Total | 9 | 100.0 |
| Weak or insufficient admissible evidence | 3 | 33.3 |
| Lack of evidence of criminal intent | 2 | 22.2 |
| Lack of investigative or prosecutive resources | 1 | 11.1 |
| No federal offense evident | 1 | 11.1 |
| Suspect to be prosecuted by other authorities | 1 | 11.1 |
| All other | 1 | 11.1 |