[TameAntelope]

One thing I haven't really seen discussed (or maybe I'm just blind) is the fact that the USPS isn't a government organization quite like the others. It's supposed to be a more-private entity that competes in a market.

Feels weird to give them law enforcement powers while still putting them up against private industry as competition, couldn't they just arrest all the UPS workers or something (gross oversimplification but still)?

[riffic]

wasn't always that way. At one time the predecessor agency to the USPS was a cabinet-level department:

https://en.wikipedia.org/wiki/United_States_Post_Office_Depa...

There is Constitutional authority empowering Congress "To establish post offices and post roads" (https://en.wikipedia.org/wiki/Postal_Clause)

We also used to have a limited form of postal banking here:

https://en.wikipedia.org/wiki/United_States_Postal_Savings_S...

[bradj]

Private railroads also have police with law enforcement powers. https://en.m.wikipedia.org/wiki/Railroad_police

[flyingfences]

USPS is given an explicit monopoly on letter deliveries; they do not compete in their market.