Brainiest To Best! When did Trump build the wall? I'm researching to compare Trump's wall with the Great Wall of China but the issue is... I can't find anything. Did he build that wall yet, it's almost been a year and I figured he at least started building it and has the schematic estimates for "how big it's going to be" and I'm curious as to where he started the build, what area. Would Trump go to jail if he decided not to build the wall all of a sudden? Would he face any consequences?