We went to US Consulate, Ottawa and got my wife's TD visa stamped in her passport.
I've been in the US for 13 of the last 14 years and over the years I've obtained 6 different TN's and I've been on an H1b for a total of 8 years. I was voluntarily out of the country for 1 year about 5 years ago, which reset my H1b clock.
The last status I had was a TN and that was after I was married to a USC (we were still deciding what country we'd live in) and finally I filed for my GC. My EAD was approved 2 weeks prior to my TN expiring and now I am just waiting for my GC Interview in 4 weeks.
I got my first TN in 07/96 and was content working with that until the Pigeon River point of entry decided that the TN for health care worker was good only for 6 months with the second one at no charge. Back then, dual intent was either ignored or didn't exist for TNs so I started the immigration process. I was in Kansas, so my labor cert took 2 years because there was only one person in Topeka working on them. If I lived in New Jersey, it would have been approved in a month. Once it was approved, I filed the I-140 and after that was approved, the I-485. There was no H1B involved.