加拿大公民拥有TN 签证可以申请美国绿卡(Labor Certification)吗？
TN-1 is a temporary visa that needs intent to return to Canada upon completion of the one-year temporary work. Unlike the H-1B, TN does not enjoy dual intent.
But filing of labor certification application does not in itself constitute such an intent not to return to Canada. In your case, you are in a very early stage of the immigration process, waiting for the labor certification application. Accordingly, you are not likely to face a serious problem either at the border or at the USCIS Service Center, in obtaining extension of TN status for another year.
Canadians can often gain entry to the US with greater ease than others; this preferential treatment for Canadians is linked to treaty provisions within the North American Free Trade Agreement (NAFTA). While there are many NAFTA related visas, the most useful one is the TN1. The TN1 visa was modeled on the H1B; it may only be used where the employer is based in the US, and the candidate is a professional in one of the categories listed on below. Where a candidate, by their profession and nationality, qualifies for the TN1 visa, it has the following advantages over the H1B:
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