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_

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