TN visa restrictions are much less onerous to an employer and employee than an H1B. Similar culture and less restrictive language barriers are also benefits tha

TN visa restrictions are much less onerous to an employer and employee than an H1B. Similar culture and less restrictive language barriers are also benefits that might lead an employer to hire a Canadian. I would suggest that the first point is the likely culprit for the number of Canadians employed in the US.