Since June 1, 2009 it is required to present a U.S. Passport at every land port for entry, sea and airport of the continental United States in order to re enter the United States. For more information, please visit the following web site: http://www.getyouhome.gov/html/eng_map.html

For detailed information in English and Spanish, please visit the Institute National de Migration office - http://www.inm.gob.mx/EN/index.php

To find the nearest U.S. Consulate office, please visit the U.S. Department for State office - http://www.state.gov/p/wha/ci/mx/c3063.htm

To find the nearest Mexican Consulate office in the U.S., please visit Mexic?s Secretaria de Relacines Exterires office - http://www.sre.gob.mx/acerca/directorio/consulados/dirconsulados.htm

For detailed information on how to relocate and/or expand into Arizona, please visit the Arizona Department f Commerce: http://www.azcommerce.com/BusAsst/Expand/

For a thorough guide on how to do business in Mexico, please visit the Secretaría de Econmia: http://www.promexico.gob.mx/wb/Promexico/idiomas/_lang/en http://www.economia.gob.mx/?P=2

For complete details on SENTRI, please visit: http://www.cbp.gov/xp/cgov/travel/trusted_traveler/sentri/sentri.xml

For complete details on FAST, please visit: http://www.cbp.gov/xp/cgov/trade/cargo_security/ctpat/fast/