Trump promised to build a wall of 1900 miles at the southern border. Despite declaring a national emergency and shutting down the government to get it done, after 3 1/2 years, 200 miles of wall are completed, of which 65 miles of "new" wall and the remainder was existing barriers that were improved. Another 450 miles were promised to be built by the end of 2020 costing 18.4 billion dollars of which Mexico will pay $0.