NAFTA Visas ("TN" Visas)--who can get them? And what are the qualifications?

NAFTA Visas are available to professionals who are citizens of Mexico and Canada under the North American Free Trade Agreement. The government has a list of professions that qualify as NAFTA professions. Even assuming a Canadian and Mexican immigrant meets the "profession" requirement, there are other requirements that must be met before the immigrant can qualify for a NAFTA Visa. Those requirements are as follows:

The profession must be one that is recognized under NAFTA.
The NON-immigrant must possess the specific criteria for that profession.
The position must require a worker in that professional capacity.
The employer must be an American employer

Employers must fill out form I-129 http://www.uscis.gov/files/form/I-129.pdf