http://en.wikipedia.org/wiki/TN_status
http://www.tnvisaexpert.com/tnvisa_watchout.html
http://travel.state.gov/visa/laws/telegrams/telegrams_1422.html
http://www.grasmick.com/nafta.htm
http://www.grasmick.com/board/?topic=topic1
http://www.tnvisaexpert.com/tnvisa_watchout.html
http://travel.state.gov/visa/laws/telegrams/telegrams_1422.html
http://www.grasmick.com/nafta.htm
http://www.grasmick.com/board/?topic=topic1