With all the focus on a wall to (in a way) quarantine Mexico and President Trump's notorious disinclination to read, one wonders if he would be interested in a brief history of Mexican immigration ...
In the 1960 presidential election, John F. Kennedy seized on the issue to earn votes. He said the farmers by paying less and using foreign labor were undermining U.S. workers. The problem -- for that is what it had now been made into -- gained such traction that Kennedy's successor, Lyndon Johnson, ended the program in 1964.
But a law does not diminish the need for labor, so the business went underground. The law had not criminalized the hiring of illegal migrants, so Mexicans continued to come, although without documents. At the end of the season, they could still go back to their families because it was easy to cross the border.
Then came NAFTA which halved the price of corn in Mexico (due to cheap subsidized American imports) and forced Mexican farmers off their land. Where could they go but north and families followed. Add U.S. initiated regime changes in Central America -- persecution of labor leaders, extra judicial killings and general chaos there -- and waves of people fleeing chaos added to the undocumented immigrant population. That number is now a little over eleven million, approximately three percent of the total U.S. population. If Libya, Syria and Iraq had been on this continent, one could easily have added another million (or two) to the figure.
President Trump, nobody wants to leave their home; they are usually obliged to -- like your grandfather deported from Bavaria, where he wished to live, for illegally dodging his required military service. (Only psychotherapists can assess the subconscious influence of this family trauma and your fascination with military generals.) Immigrants are here because of the unintended consequences of American laws and policies. One caveat then is, be careful what you wish for. That wall we hear so much about ... we can only hope you and your team have thought through all the implications and eventualities. Who knows there might be a reverse exodus of those sickened by the ersatz Louis Quinze kitsch and a Trumpian dystopia.