Importing a car from Canada

I imported a 69 rr and exported a 62 Savoy a couple years back. It was pretty easy. Was. Paperwork to the U.S. was basic, but involved. I do know I had to supply current ownership for him. This was to Idaho. I think it has all changed drastically in the last couple years though. When I get home next week I can dig through paperwork and refresh my memory.