The postal reorganization act does not allow USPS to count costs of tribute ~ best possible word for that $5 bil ~ as a cost to be passed on to the rate payers as a postage rate increase.
RINO Olympia Snowe came up with that particular stupid idea ~ she's gone. Her idea should be disposed of as well.
You really need to check your facts. The Post Office has lost billions this year on operations, exclusive of pension payments. Here’s an article you can read:
http://www.nytimes.com/2012/11/16/us/politics/postal-service-reports-a-nearly-16-billion-loss.html
The USPS is a broken anachronism. At minimum, their monopoly on First Class mail should be revoked. At best, they should be shut down.