The mafia will make billions by paying an army of crazy homeless people to feed garbage to the radioactive zombie rats and then charging the government to remove the rats - which will somehow end up in Mexico in dead government informants.
The NY government will then get in on the racket and make capturing radioactive rats illegal without possession of one of three rat disposal licenses that are auctioned to the highest bidder each year on condition that rat feed be purchased from the NY government, and any proceeds be split evenly with the MTA — which still spends $49 billion a year on overtime despite no workers, riders, subways, or buses having survived the initial nuclear strike.
