Canadian buying with Cash from LOC versus Mortgage?

[Sanjai Dayal]

I am moving from Canada to Wilmington, NC in January 2023. 

I have available Line of Credit up to 500K (Canadian dollars) to purchase a home, but the Canadian dollar is very weak now. 

I can also acquire a US mortgage (US dollars) with a similar interest rate.

How much negotiating power is there with cash offers at this time? If I can get a good deal with cash, I may opt to use my Canadian Line of Credit despite the weak Canadian dollar.