Who is usually responsible for enforcing an environmental law after it is passed by a legislature?

Typically, environmental laws are enforced by designated government agencies at the federal, state, or local levels. In the United States, for example, the Environmental Protection Agency (EPA) oversees the enforcement of federal environmental regulations. State environmental agencies may also have the authority to enforce laws specific to their jurisdictions. Additionally, local authorities can play a role in enforcing environmental regulations within their communities.