Trump's border-wall proposal faces many obstacles

President Donald Trump has now laid out exactly what he wants in the "big, beautiful wall" that he's promised to build on the U.S.-Mexico border. But his effort to build a huge hurdle to those entering the U.S. illegally faces impediments of its own.It's still not clear how Trump will pay for the wall that, as described in contracting notices, would be 30 feet (9 meters) high and easy on the eye for those looking at it from the north. The Trump administration will also have to contend with unfav