TN1 visa allows Canadians to work in the US indefinitely in most professional-type roles e.g. teacher, engineer, accountant, etc. It doesn’t require much more than a job offer to get the visa.

It is a non-immigration visa so it isn’t a path to citizenship, just an American job. Many Canadians take advantage of this.

The US makes it relatively easy to get a work visa if you have a science degree from a university.

It's easier to get a job for a company in the U.S than it is to cross the border with a job in the U.S. If you have a degree and a job, great, otherwise no

TN visa