1 - 4
And fortunately, the USPS does both.
They don't have enough money to pay for pension and health beneffits because the government mandated the USPS to prefund their retirement benefits for the next 75 years--and do it all in 10 years. That's unprecedented (and an unnecessary) burden on a specific entity and is easily interpreted as a bully tactic by those in Congress who want to see the USPS fail--or at least suffer. If a more reasonable imposition and time frame were in place, then the USPS would have plenty of money to pay for the health benefits that they are asking assistance with. Again, no other entity, public or private, has such strict imposition of funding requirements that the USPS does, and there is no reason that the USPS should.
Hmm; that's funny. FedEx, UPS, Airborne, etc. deliver mail too.
But it's not a monopoly. FedEx can do ground delivery. Many USPS post offices have boxes for FedEx, UPS, etc. Oh, and btw, USPS receives no government funding. And the main reason the USPS might have to reduce quality and availability of service is because of the discriminatory restrictions that the radical congress has imposed upon the USPS far beyond what other government entities (or private agencies) are required to do.
1 - 4