Thank you for sharing @SKRE .The future company could allow me to start WFH in anywhere of USA but not in Canada. Basically, I just need to rent a place anywhere south of the board and work from there. Not sure why they wont allow me WFH in Canada.
What did you end up doing?
Was there any immigration (or tax) complications?
Would it be enough to go to the border, get the TN status and if necessary apply for SSN (and possibly stay for a few days or not!), then work remotely from Canada?