The effective enforcement of environmental laws is vital to any protection regimes that are designed to protect the environment. In the early days of environmental legislation, violations carried largely insignificant civil fines and penalties. Initial environmental laws and regulations had little or no deterrent effect on corporations, individuals, or governments to comply with environmental laws. Indeed, a major source of failure of US environmental protection legislation was the civil character of federal enforcement actions. Their chief sanction was fines, which many corporations took in stride as a cost of doing business. Environmental criminal law covers narrower ground. Its core consists of the criminal provisions of eight federal statutes passed mainly in the 1970s and amended in the last two decades.