| Clue | Source | Date |
|---|---|---|
| Matter for the U.S. Postal Inspection Service (2 wds.) | ||
| Crime involving the postal service | USA Today | 27 Oct 2022 |
| Postal crime | Universal | 14 May 2020 |
| Crime that Charles Ponzi pleaded guilty to | The New Yorker | 06 Jan 2020 |
| Matter for the Postal Inspection Service | New York Times | 01 May 2019 |
| Matter for the Postal Inspection Service | ||
| Something that doesn't follow the letter of the law? | New York Times | 01 Nov 2015 |
| Something that doesn't follow the letter of the law? |