[liminal]

Do others also find it strange that the postal service has their own police force?

[grimjack00]

Less strange than the Department of Education having one.

https://www.washingtonpost.com/news/answer-sheet/wp/2013/01/...

[pixl97]

No, they in fact have one of the oldest police forces in the US.

Mail fraud and mail theft is a crime as old as mail.