I sent an unused camera to a relative who lives in Knoxville, TN; I live in Cincinnati, OH. I tracked it through USPS tracking; 1st it went to Louisville, KY then To Memphis, TN, then onto Nashville, TN and finally to Knoxville. This took 11 business days. When I mailed it USPS told 3-4 days. Per haps this is why the USPS is always losing $$$?
No, the financial problems are because of the way it must handle its money. I don't know all the details, so I'm not going to guess. But it is required by Congress to do things in a somewhat unusual manner, so being profitable is a challenge.