[TechBro8615]

If that's the case, surely it would be more appropriate for a law enforcement agency such as the FBI to investigate any crimes committed against postal workers. But we aren't even talking about crimes that were committed here – we're talking about crimes that might be committed.

[bigth]

The postal inspection service is a law enforcement agency...? And it existed before the FBI. Moreover, all federal law enforcement trains at the same place in Georgia.

Look: https://www.uspis.gov

Matter of fact their website news section shows you some of the crazy crime they investigate. Theft of postal vehicle happened few days ago apparently.