The purpose of this legislation is to permanently ban offshore drilling for oil and gas in specific areas of the outer Continental Shelf, which includes the North Atlantic, Mid-Atlantic, South Atlantic, and Straits of Florida. This is aimed at protecting the ocean environment and supporting tourism in these regions. The key provisions of the law state that the Secretary of the Interior is prohibited from issuing any leases or permits for the exploration, development, or production of oil, natural gas, or other minerals in the designated planning areas.