Law does not make reality. If it did, Obama can tomorrow sign a law saying that Government will reduce spending by 50% while providing more services. Obviously, the real life(TM) will safely ignore the law.
And I don't see a difference between whether USPS is directly funded by taxpayer dollars OR taxpayer are on the hook for unpaid USPS bills.
And I don't see a difference between whether USPS is directly funded by taxpayer dollars OR taxpayer are on the hook for unpaid USPS bills.