The bulk mail lobby is enormous and the main reason Congress does nothing to address the short fall. They get paid on the front end through "campaign donations" from orgs like
http://napl.org/ and then you get to pay for it on the back end through taxes.
Lose - Lose for everyone but the lobby's and Congress.
Considering that 95% of what is carried via USPS these days is junk mail, why not demand that they pay for the service they abuse and stick you with the bill?
Thought junk mail was annoying? I'll show you annoying - you get to pay for it too!!!!