it details plans for border security, $30 billion for a border wall, and increased technology. daca legalization, 1.8 million illegal immigrants given a pathway to legalization, protecting only the nuclear family when it comes to chain migration and eliminating the lottery and repurchasing visas. who the president's instance insistence on a wall is clear. there is more vocal opposition from environmentalists. casey stegall is in texas, looking at both sides of the story. >> tucked away in south texas, a place unlike any other. >> this has the largest diversity of plants and animals of any refuge in all of north america. >> santa ana national wildlife refuge spans more than 2,000 acres along the texas-mexico border, segments of president trump's wall are supposed to be built here. >> the refuge that was created