First of all, Canada is not a part of US territories, even though they are neighbouring, like Mexico, so it is impossible to endorse a state nursing board RN license to any Canadian nursing board (College of RN in province, in Canada), no matter what.
As Silver* says above, you have to go through NNAS, which is on CGFNS.org's Canada (click the flag) site, and read the handbook for applicants.
You might get waived for English Language Proficiency since your ENTRY NURSING education is done in English, but everything else (its process) will be same as other internationally educated nurses in Canada. (who arrived as immigrants or newcomers in Canada.)
If you have taken NCLEX-RN between 1984 and 2014, the exam might be waived too, but it is totally up to NNAS' decision, after then, you have to apply for the college of nursing in the designated PROVINCE.
(separately, and the college will be 'referred' to see your result of NNAS)
And I have heard some provinces do not give the license right away if you are not landed immigrants.
CNO has no power or whatsoever answers, that I ever heard.
You better ask the college of nursing in whatever province you are pursuing the license.
So far, Ontario seems generous since they have lots of experience with foreign nurses, but no one can predict the result until it ends.