From the Document: "In a proclamation [hyperlink] released on his first day in office, January 20, 2021, President Joseph Biden declared, 'Like every nation, the United States has a right and a duty to secure its borders and protect its people against threats. But building a massive wall that spans the entire southern border is not a serious policy solution…It shall be the policy of my Administration that no more American taxpayer dollars be diverted to construct a border wall.' The President's proclamation directed a series of steps designed to interrupt southern border barrier construction, and included  terminating the state of national emergency on the southern border,  pausing border barrier funding and construction activity, and  developing a plan for redirection of funds managed by the U.S. Army Corps of Engineers (USACE) for border projects. (In a subsequent implementation memorandum, the USACE Commander was authorized to approve [hyperlink] exceptions to avert immediate physical dangers.)"
CRS Insight, IN11675
Congressional Research Service: https://crsreports.congress.gov/