The Trump administration is moving forward with plans to build a border wall “along the entire southern border,” including in the city of Laredo, Mayor Victor D. Treviño announced Monday. City officials were notified during a regular meeting with officials from U.S. Border Patrol and the U.S. Department of Homeland Security. Treviño said DHS discussed a proposed timeline for border wall construction. Construction will occur in four phases, the first of which will be a 15-mile segment that could begin construction next year, according to the mayor. Decisions on the design of the barriers have not been finalized...