The 123-page report, completed in July and obtained via the Freedom of Information Act, indicates that the administration’s plan to convert an existing five-foot-high vehicle barrier to a 30-foot steel edifice could pose irreparable harm to unexcavated remnants of ancient Sonoran Desert peoples. Experts identified these risks as U.S. Customs and Border Protection seeks to fast-track the pace of construction to meet Trump’s campaign pledge of completing 500 miles of barrier by next year’s election.
Read the full National Park Service report
New construction began last month within the internationally recognized biosphere reserve, a national monument southwest of Phoenix with nearly 330,000 acres of congressionally designated wilderness. The work is part of a 43-mile span of fencing that also traverses the adjacent Cabeza Prieta National Wildlife Refuge.