Bans new oil and natural gas leases or authorizations in three offshore areas off the coast of Florida: the Eastern Gulf of Mexico area referenced in the Gulf of Mexico Energy Security Act of 2006, part of the South Atlantic Planning Area south of 30°43′ North, and the Straits of Florida Planning Area. The change amends the Outer Continental Shelf Lands Act to make those areas off-limits for new leasing while preserving any rights from leases already issued before this amendment.

The amendment does not create new funding, does not alter existing leases issued prior to enactment, and directs federal offshore leasing authorities to refrain from issuing new authorizations in the listed areas.