Many of the environmental statutes permit citizen suits. As a result, environmental groups bring many lawsuits against both the EPA and polluters, alleging violations of these statutes. Are these suits a good idea? The Fish and Wildlife Service says that it spends so much of its resources responding to litigation over why it has not listed endangered species that it has no resources left to actually to do the listing. Businesses argue that it is unfair for every citizen to be a cop on the beat. On the other hand, environmental groups often supplement the limited resources of the EPA.