| Item | Count | Percent |
| Total | 37 | 100.0 |
| Weak or insufficient admissible evidence | 16 | 43.2 |
| Suspect to be prosecuted by other authorities | 12 | 32.4 |
| Agency request | 4 | 10.8 |
| Lack of evidence of criminal intent | 3 | 8.1 |
| No federal offense evident | 1 | 2.7 |
| Suspect being prosecuted on other charges (e.g., UFAPs) | 1 | 2.7 |