The USPS is not supposed to be a profitable business, any more than the Army or the State Department or the prison system is. It is a Constitutionally-sanctioned organization, operating under the premise that universal mail delivery is a valid government concern.

To the extent the USPS "has issues," as you put it, it is because Congress has consistently set them up to fail. Congress is free to shut down the USPS or kneecap it if they want, but the executive is not. Certainly not to serve their own corrupt purposes.

Just something else to add to the list of things Republicans would scream bloody murder about if a Democratic president were doing it.