These are not changes to immigration, they are just covering more nurses now. You must have a Visa Screen Certificate in hand to get your NAFTA Visa. You are not able to apply for it until after you have actually completed all of your classes and your final transcript has been issued. Your biggest hold-up is going to be getting the Visa Screen Certificate. At the moment this is taking about six months. If you go to www.CGFNS.org
and go to the bottom of the list where the have the programs offered, you will see Visa Screen for NAFTA Visa. You need to go to this area to download the information that you need and will need to take care of. I suggest that you look at it now to see what will be required of you..............One suggestion, if you are considering permanently moving to the US, I would recommend applying for a green card. First, tax incentives, and second, in case NAFTA ceases to be.
Once you are close to finishing, you can begin looking for a job. You always have needed a "letter of intent to hire" even to get your NAFTA Visa. You probably just never heard of it. The hospital in the US is who is sponsoring you for your Visa, you are not issued it just because you are a nurse. NAFTA Visas actually only take a few months, much quicker than the green card.
If you were expecting to be able to work as a nurse in the US the week after you graduate from school, sorry..................
Hope that this helps. If you have any more questions please do not hesitiate to post them.