| Item | Count | Percent |
| Total | 19 | 100.0 |
| Weak or insufficient admissible evidence | 8 | 42.1 |
| Suspect to be prosecuted by other authorities | 5 | 26.3 |
| Lack of investigative or prosecutive resources | 3 | 15.8 |
| Minimal federal interest or no deterrent value | 2 | 10.5 |
| All other | 1 | 5.3 |