I practice a niche physical activity with <1000 practitioners in North America. It is all volunteer based and nobody makes money off of it. Seminars are distrib

I practice a niche physical activity with <1000 practitioners in North America. It is all volunteer based and nobody makes money off of it. Seminars are distributed across US and Canada with instructor level people routinely crossing the border. If you tell the border guards on either side that you're teaching, you get immediately deported.