EMC and radio requirements applicable to the North-American market are mainly managed in a federal view of the frequency spectrum.
The Federal Communications Commision (FCC) for United States and Industry Canada for Canada have defined the rules and proceeding to avoid disturbances generated by electronic equipment which can cause damages for the frequency spectrum.
This management concerns from one part all the States of the USA and from another part all provinces of the Canada. In the two cases the frequency spectrum management is federal.
Except for product with specific uses (as example medical), only the emission will be covered by this two countries regulation (a medical device sold in United States, is out of the FCC skills and depends on the FDA which also set immunity requirements).
Depending on the nature of the equipment market, several proceedings are applicable from which some may require specific recognition.