You mean "L-1". These are visas for people who've already been working for a US company, to transfer to the US. http://en.wikipedia.org/wiki/L-1_visa http://en

You mean "L-1". These are visas for people who've already been working for a US company, to transfer to the US. http://en.wikipedia.org/wiki/L-1_visa http://en.wikipedia.org/wiki/L-1_visa TN work permissions (usually not really a "visa" as such, and note the lack of numeral) are for Canadians and Mexicans to work in the US, and have no tenure requirement with the company. http://en.wikipedia.org/wiki/TN_status http://en.wikipedia.org/wiki/TN_status