United States Citizenship and Immigration Services (USCIS) This agency up to 2003 was named the INS or Immigration and Naturalization Service.  "On November 20, 2014, the President announced a series of executive actions to crack down on illegal immigration at the border, prioritize deporting felons not families, and require certain undocumented immigrants to pass a criminal background check and pay taxes in order to temporarily stay in the U.S. without fear of deportation. " Ref: USCIS We spend billions per year protecting our borders, and the southern border is a point of political contention between many groups, some want to tear down the fences, others want to build massive and expensive walls at taxpayer expense.  The BorderTransportationSystem is designed to satisfy both groups while being 'self-supporting' {i.e., not needing taxpayer funding}, and being a profit generating entity for the development of the border in both nations. Since taking office in 2006, Mexican President Felipe Calderon has sent thousands of troops to the U.S.-Mexico border to combat drug traffickers. Since the BorderTransportationSystem is an natural barrier to crossing from one side to the other, and it will become a 'de facto' wall for keeping out the undesirables and trafficking of illegal substances, and humans.  While is is a barrier to illegal activity it is also a enticement to legal activity and much easier control of whom enters or leaves the two nations, and this should 'cut the need for massive funding' for protection of the border. Index of ... Immigration and Naturalization Service Immigration Timeline - Frontline World United States Citizenship and Immigration Services (USCIS)