The following is an exclusive excerpt from Michelle Malkin’s new book, Open Borders, Inc: Who’s Funding America’s Destruction?, available Tuesday, September 10. *** The Illegal Alien Shelter Network Operating in Plain Sight from Central America, across Mexico, and into the U.S. To fully appreciate the manufacturing of the 2018–2019 invasions of our southern border, you must first understand this: Pueblo Sin Fronteras is just one cog in the well-oiled, illegal-alien caravan-generating machine. Let’s start with what open-borders advocates themselves call their “Underground Railroad” of migrant safe houses that extend across Central America, through Mexico, and up and into the U.S…...