>>It does so by mechanisms such as..
>>
>>http://thehill.com/homenews/administration/179811-white-house-moves-to-save-postal-service-from-default
>>
>>http://www.businessinsider.com/things-you-should-know-about-the-us-postal-service-before-it-goes-bankrupt-2011-5
>>
>>http://www.newsmax.com/Newsfront/Postal-Service-Raise-Debt/2011/08/05/id/406288
>>
>>It just continues to roll up debt.
>>
>>A private company would be long gone.
>>
>
>But a private company would not have been forced to pay for health care benefits of future workers.
>
>http://www.cnbc.com/id/45049636/Fixing_the_US_Postal_Service_s_Finances

Most likely, although Unions do manage to threaten companies into agreeing to many things. Government protected organized crime is a serious problem in this country.