My brother work in the main Post Office in St.Louis doing the maintenance on the sorting machine, he been there about 17 years.

I could tell you what he has described as the problems, but the problems aren't anything that could be posted on a public forum.

Lets just say that there are issues with who they are required to hire by the selection process the Post Office uses for hiring.

Packages get routinely lost/massively delayed at whats called the Hazelwood Sorting Facility.
It's in North County, right by Ferguson MO. That should tell you a lot.

The funny thing is that my brother says that Hazelwood building isn't actually a sorting facility.