USPS can be profitable if they can make changes without Congress's approval and without having arbitration rules that prevent them from considering their ability to pay the bills.

So if you can eliminate Congress, throw out their arbitration rules, they might be able to make the structural and functional changes they need to succeed. This does mean closing offices, distribution centers, and having a pension and retirement system they can afford to offer. Which by the way is what is facing most government employee pensions as many are unfunded and have ludicrous payouts