US Treasury Department

It looks like the IRS is seriously understaffed and under-funded to be able to collect all the outstanding taxes owed to it so it is trying to get "a Private Debt Collection (PDC) program that started with a limited
implementation in September 2006 with fuller implementation that began
in January 2008," pushed out even further, according to the Baltimore Examiner, Consumer protection group: "Bounty Hunters" collecting back taxes troubling:

Paying private debt collectors on a commission basis is costly and  threatens the rights and privacy of the American taxpayers. Congress must ensure, as this resolution seeks to do, that federal tax collection functions will not be handed over to private sector bounty hunters.

Critics of the private collection agency program say that, compared with private debt collectors, whose bad apples star in countless horror stories of debtor abuse and intimidation, the IRS's customer-service-based approach may start looking pretty good to taxpayers.