Two in three Americans live in the "border zone," a 100-mile stretch inland where some constitutional due process and privacy protections are functionally canceled in the name of border security. The zone includes entire states -- Delaware, Florida, Hawaii, nearly all of New England, and all but a tiny sliver of Michigan -- as well as about three in four of our 20 largest metro areas. Is the Trump administration trying to make it bigger?The prospect seems obviously attractive to immigration hawks like White House senior adviser Stephen Miller, known to be the president's chief influence on border policy. Yet the possible suggestion of interest in expanding the border zone comes not from Miller but acting Commissioner of U.S. Customs and Border Protection (CBP) Mark Morgan, who joined President Trump on stage at a law enforcement conference in Chicago this week."We will be building 450 miles of big, beautiful wall by the end of 2020," Morgan said, implausibly. ...