FAIRFIELD-SUISUN, CALIFORNIA Then President Donald Trump visits the U.S.-Mexico border, east of the Otay Mesa Port of Entry in San Diego, on Sept. 18, 2019. (John Gibbins/San Diego Union-Tribune/TNS) Army Corps of Engineers halts border wall construction after Biden’s executive order WASHINGTON — The Army Corps of Engineers halted construction of the wall along the U.S.-Mexico border Thursday after President Joe Biden’s executive order, which ended the national emergency declaration that former President Donald Trump had used to justify the project. The wall “is a waste of money that diverts attention from genuine threats to homeland security,” Biden said in the executive order, which was issued late Wednesday and directs a review of all funds spent on wall construction and orders that no other spending move forward.