What are the decisive advantages of Canada in handling American immigration?

They are dealing with the problem of American immigration, which is famous. This is already an ace business. They have worked in Canada for 20 years and must have rich experience. I still remember that they have 100 million US business insurance, and the risk of being an American immigrant there should be much lower than that of other companies. With these conditions, Canada and Canada certainly have a decisive advantage in American immigration.