Share Tweet The opinions expressed by columnists are their own and do not necessarily represent the views of Townhall.com. Source: An African migrant on the Mexican bank of the Rio Grande River across from Texas. 2019. Photo by author Todd Bensman A world of aspiring immigrants has now fully absorbed the welcoming words of President Joe Biden – that he will grant all comers unobstructed “catch-and-release” illegal entry over the American southern border to live and work without fear of ICE deportation. So now they are coming, in rivulets and tributaries in South America that form a river by Mexico and, always troubling to homeland security practitioners, from a diversity of nations that would surprise many Americans.