Earlier quoted context omitted.
As a Canadian, currently stuck in the US immigration process, I chuckle at this remark. Also I-485's i.e. Green Cards, Permanent Residence status, in the US are based on where you are BORN not which citizenship(s) you have.
Yes but the goal is not to move to the US permanently, it is to make a ton of money here and then retire in Canada.
Everyone knows the "ton of money" doesn't come from working a salaried job, it's from creating something new / starting a company.
But only US green card holders or US citizens can even dream of considering that as an option they can pursue.