I do not want to make a plug for our services on the forum - but we are here to help. Since you've posted your question and no one has answered it - our suggestion is the same as your request - to get legal advice so that you can clearly move forward or not.
Contact a lawyer from the
TN Visa Expert
Lawyer Network. They offer a very affordable Phone Consultation so you can determine how to proceed. Currently priced at $65USD, it's a 20min call and you will be very clear on your best course of action of how to work in the U.S.
Let them know you found them from
TN Visa Expert, to ensure you get this price we've negotiated on your behalf.
It'll cost you a lot more if you have immigration problems and that's not worth it.
Reba (moderator), please remove this post if you find it
unjustified - my intention, like our mission, is to help Canadians easily and affordably live in the U.S.
Hope this helps.