The TN visa is a powerful non-immigrant visa classification available to citizens of Canada and Mexico. With a TN visa, you can live and work in the USA for extended periods of time.
To qualify for a TN visa, you must work in the USA in one of the professions  on the list of TN occupations, which encompasses a wide range of occupations across many fields.
The TN classification requires that you must have non-immigrant intent. The TN visa is a non-immigrant visa classification so it does not directly lead to a green card.
If you have any questions about the TN visa, or if you would like help getting a TN visa, email me at Eliott@NazarianFirm.com