President George W. Bush calls for an overhaul of the immigration laws, proposing a guest worker program that would “match willing foreign workers with willing American employers, when no Americans can be found to fill the jobs.” Immigrants would be authorized as guest workers for three years, then required to return home. The legislation goes nowhere. The Secure Fence Act of 2006 authorizes construction of hundreds of miles of additional fencing along the southern border, more vehicle barriers, checkpoints and lighting, and increased use of advanced technology, such as cameras and satellites, to prevent illegal border crossings.