Final answer:
Congress plays a critical role in establishing environmental protection regulations enforced at local and state levels since 1970.
Explanation:
Congress is the organization responsible for setting up environmental protection regulations that are enforced by local and state authorities. Since 1970, Congress has enacted several important environmental laws to protect the environment and natural resources, such as the Clean Air Act and the Clean Water Act. These laws have been crucial in ensuring cleaner air and water in the United States.
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