Canada’s higher education is one of the best around the world. You are going to get a visa in order to study or intern over there. Its obtention may take some time. Canada’s law does not provide rules about pay. This is your boss who will decide it. Get a grant from Canada’s state is possible.
Universities of Mexico look like to USA universities. The cost of living is the lowest of Northern America. You can find a roof easily. In additional public transport is very developped. A visa permission is necessary.
This is a specifical province of Northern America. Over there official language is french. You will find a plenty of opprtunities for your studies, intern or job. Find more information here.
The United States of America
Legislation of work and intern is very complicated in the United States. You need a lot of permission. So be careful about it otherwise there is a risk of complication. In order to fund your trip you could benefit of Bourse of Fulbright from Franco-American Commission. Find a job here. Of course a visa is compulsory to coming in territory of the United States.