| Item | Count | Percent |
| Total | 39 | 100.0 |
| No federal offense evident | 25 | 64.1 |
| Lack of evidence of criminal intent | 6 | 15.4 |
| Weak or insufficient admissible evidence | 4 | 10.3 |
| Lack of investigative or prosecutive resources | 2 | 5.1 |
| Suspect to be prosecuted by other authorities | 2 | 5.1 |