BCanadians 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
The TN1 is granted for a specific employer. If needed for more than one employer, multiple TN1 applications need to be made. Self-employed professionals would not be able to come under this particular visa category, and may consider the E2 Treaty Investor category under NAFTA.
While it is possible to apply under the TN1 visa with minimal documentation, it is prudent for candidates to arm themselves with the following documents at the border with the US: