LAREDO, TX - AUGUST 07: A mother and daughter, caught after illegally crossing into the United States, await deportation to Mexico, as Border Patrol agents out-process illegal aliens at a station August 7, 2008 in Laredo, Texas. Texas has the longest border with Mexico of any U.S. state and has the fewest Border Patrol agents per mile, making it attractive for human smugglers to bring illegals into the U.S. Illegal immigration in an important topic in this year's presidential campaign, with both candidates promising immigration reforms if voted into office.