Biden invoked the 2010 BP oil spill, but his ban doesn’t include the area of the Gulf where the spill occurred.

Environmental groups applauded President Joe Biden’s decision on Monday to enact a sweeping ban on new offshore oil and gas drilling along most of the U.S. coastline. But the ban had one glaring omission: It didn’t include the western Gulf of Mexico, where the country extracts most of its offshore oil.

More than 600 million acres of coastal waters will be off the table. President-elect Donald Trump has vowed to reverse the ban his first day in office.