The Security and Prosperity Partnership (SPP), signed by President Bush with Mexico and Canada in Waco, Tex., on March 23, 2005, was fundamentally an agreement to erase our borders with Mexico and Canada. As I have documented below, the SPP “working groups” organized within the U.S. Department of Transportation are signing trilateral memoranda of understanding and other agreements with Mexico and Canada designed to accomplish the open borders goal incrementally, below the radar of mainstream media attention, thereby avoiding public scrutiny. Congress is largely unaware that SPP exists, let alone knowledgeable about the extensive work being done behind the scenes...