Inspired by the U.K.'s recent plebiscite, and Mr. Trump's plan to build a border wall, I hereby propose a plan superior to both. In addition to the wall on the southern border, I propose we wall off California, and a portion of the eastern sea-board between New York City and D.C. Much of New Jersey, Delaware, and Maryland would have to be sacrificed, with any remaining portions being absorbed into adjacent states (with apologies to Pennsylvania and Virginia).
In addition, inhabitants of Midwestern cities with a population over 1 million would be deported to the coastal Forsaken Zones. Select cities like Austin and Seattle would be included in this program. Immigration from the Forsaken Zones would be subject to Extreme Vetting, to include a marksmanship test, using a rainbow flag as a target; and a demonstration of how to draw Mohamed. (Extra points will be awarded for "drawing" a portrait of Mohamed, from 15 yards, on the rainbow flag target.)
We will also remember our neighbor to the north. Our border with her will be left open, to allow some room for malcontents to escape. Any former Americans attempting to re-enter through the Canadian border will be deported to Bill Clinton's private orgy-island.