Most practical Americans know that building the Wall is useless and expensive. But Trump is saying all of the crimes and ills of America are due to the Mexicans. So, he tells America to build the Wall and the costs will be paid by the Mexican government. By saying so, he is fulfilling one the major promises in his campaign.
But in reality, he knows this idea will never fly. The cost of the Wall will be paid by Americans in terms of higher costs of products coming from overseas, particularly Mexico. If the Mexicans don't pay up, he can deport all of the illegal Mexicans in this country. He can say that he created jobs and prosperity by building the Wall and claim that he cut crime and social cost by building the Wall. So, in the end, America will have a Wall in the middle of the desert as a testament to American ingenuity and wisdom. But will the Americans of the future understand it as such?
