By Jacob Burg

The Trump administration said on Dec. 10 that it would transfer roughly 760 acres of public land along the U.S.-Mexico border in California to the Navy for three years to support border security operations.

While announcing the decision Wednesday, the Interior Department said the land would become part of a “National Defense Area,” or militarized zone, to bolster immigration enforcement.

The land stretches from roughly a mile west of the California-Arizona state line to the western edge of the Otay Mountain Wilderness Area in San Diego and Imperial counties, according to the Interior Department.

“This corridor is one of the highest-traffic regions for unlawful crossings along the southern border, creating significant national security challenges and contributing to environmental degradation,” the department said.

The Interior Department said the land was originally set aside in 1907 by President Theodore Roosevelt for “border protection purposes,” and the Navy will use it to “strengthen operational capabilities while reducing ecological harm associated with sustained illegal activity.”

Since April, the federal government has transferred large portions of land along the southern border to the military, allowing troops to detain migrants attempting to cross the border or arrest people accused of trespassing on military bases.

The process began with a 170-mile swath of land along the border in New Mexico before the government expanded into Texas and Arizona.

While the Interior Department referred to the Southern California lands as a high-traffic area for illegal border crossings, arrests along the U.S.-Mexico border have dropped to the lowest level since the 1960s as the Trump administration continues its crackdown on illegal immigration.

“President Trump has made it clear that securing our border and restoring American sovereignty are top national priorities,” Interior Secretary Doug Burgum said in a statement.

“This action delivers on that commitment. By working with the Navy to close longstanding security gaps, we are strengthening national defense, protecting our public lands from unlawful use, and advancing the president’s agenda to put the safety and security of the American people first.”

The department said it coordinated closely with the Navy to make sure that the transfer is targeted and legal and that it reinforces the “historic role public lands have played in safeguarding national sovereignty.”

The announcement came shortly after a federal judge ordered the federal government to cease deploying California’s National Guard in Los Angeles and restore control of the troops to Gov. Gavin Newsom.

The Associated Press contributed to this report.