Obama's Arctic and Atlantic withdrawal (2016)
Weeks before leaving office, Barack Obama used OCSLA to permanently withdraw roughly 128 million acres in the Arctic Ocean and a swath of Atlantic canyons from offshore leasing. Environmental groups championed it as a climate legacy move.
Donald Trump tried to reverse the withdrawals with a 2017 executive order, but a federal court in Alaska ruled in 2019 that presidents lack authority to revoke a permanent OCSLA withdrawal.
The 2019 ruling became the legal foundation for the argument that permanent withdrawals can only be undone by Congress. It set the precedent Biden relied on.
Biden copied Obama's playbook but scaled it to 625 million acres, betting the same 2019 ruling would protect his ban from a Trump reversal.
