Canadian citizen here, working at a late stage startup. I could not fly out to renew my visa due to the pandemic, so we went through USCIS. My visa appeal has gone into an RFE, and there is a chance it could get denied. I have a couple more months left.

Do American companies have to do anything special immigration-wise for an employee to work from Canada (either temporarily or permanent)? Or is it just a matter of me moving back to Canada and invoicing the company as a sole proprietor (contractor)? Is that a simple solution I could pitch my company?