How to work in the US as a Canadian.

According to this site it seems like it'd be fairly easy for Canadians to go and work for a few months in the US. I'm not a lawyer, so not 100% on any this but it seems fairly clear. I'm sure YC has real lawyers who will work out any details. This is just mostly to put my own mind at ease about trouble getting in. And it looks like it won't be much trouble at all.

1) You have a degree in a professional field (Software engineering, Computer Science, etc.)

2) Your employer can provide you with a letter confirming that you fit their requirements and will be employed for 1 year at X$ (the visa is renewable yearly) and is employing you in a field that is related your degree and expertise.

I am a Canadian and I just needed to go to the airport, just before leaving, and show the required documents (passport, diploma, grades, letter from employer) and for a small fee, I think ~80$, they give you a visa good for one year. Once there, you can apply to receive your social security number, etc.

Note that the TN-1 Visa doesn't work if you are planning on being self-employed or entrepreneur in the USA. The people at the border want to see that your employer will pay you and that you need to go there because you are highly qualified for the position. The visa is also voided if you leave your job to take another job or being self-employed.