[jigglesniggle]

What do you mean spend more than they take in? The USPS is in the black, save for some strange law that they must prefund pensions 50 years in advance (any company would be running a loss if they had to do this).

The USPS can't increase their domestic prices but there is good indication that they are charging more to offset this. There are complaints in this thread even about the cost of shipping abroad, as international shipping is not regulated like domestic postage rates if I remember right. So the USPS uses outbound international shipments as a cost center to make up for the subsidy to China.

The article states there is a ~$500M subsidy to China through UPU rates.