What would I have to do if I wanted to live in the US (I'm Canadian), but, work in Canada?

I know that it’s possible, my cousin’s husband (he is Canadian, she is American) did that.
She also lived in Canada for a while and worked in the US. One of them crossed the bridge or tunnel at Windsor for work every day.
I think you would have to start by talking to immigration and then the IRS. I think there is some cooperation between Canada and the US about income taxes paid, so that you don’t really get slammed by both countries.

There should be a quick pass of some sort to get through the border. My husband’s cousins live in Mexico and their children go to school in America every day. Since you won’t be working here you might be able to get away with a long term tourist Visa of some sort. I had Venezuelan friends who used to be on a tourist Visa here before Chavez, I think it was good for 10 years.

I believe if you incorporate a business above a certain dollar value, and do the necessary paperwork, it can happen quickly. Talk to a good accountant, and call your local MP. They love questions like this. Insist on a quick response.

It seems the “border crossing card”: http://travel.state.gov/visa/temp/types/types_1266.htmlis only for Mexican Citizens.

It really seems like as a Canadian you can go back and forth with no trouble, so I am not sure you need anything. There are special types of things for Canadians doing business in America. I would call the border, or US immigration and try to get some information. If you have a lot of troule getting to a live person, don’t press any buttons like you are on a rotary phone. They will likely answer in Spanish, just tell them you speak English, they are all bilingual.

Thanks for you help, everyone.