Hi suzanne

You can do either, or both. Many choose to come to the US first with the TN Visa, and then work on getting the green card. With the TN Visa, you can begin work right away, you do not have to go thru all of the immigraiton procedures that others do. Just the Visa Screen Certificate, and a job offer. Take both to the border and you are all set. That simple.

Please do me a favor and post things loke this under the Questions for Suzanne thead, so that I will be sure to read it.