| Item | Count | Percent |
| Total | 97 | 100.0 |
| Weak or insufficient admissible evidence | 48 | 49.5 |
| Lack of investigative or prosecutive resources | 15 | 15.5 |
| Lack of evidence of criminal intent | 9 | 9.3 |
| No federal offense evident | 3 | 3.1 |
| Suspect to be prosecuted by other authorities | 3 | 3.1 |
| Agency request | 2 | 2.1 |
| Suspect being prosecuted on other charges (e.g., UFAPs) | 2 | 2.1 |
| Office policy/Dept policy | 1 | 1.0 |
| All other | 14 | 14.4 |