I'm a Canadian citizen and my US spouse and I want her to come here to Canada to live with me and start an inland application. Our current plan is for her just to drive up and come through the land border. She's going to bring an official marriage certificate and a scan copy of my passport to prove she's the spouse of me, a citizen. I know that family members are exempt from the travel ban, but is there any possibility she'll get trouble coming in because the visit isn't "necessary"? We're worried about the risk of her driving all the way there for nothing if she gets denied at the border.
I think her chances of getting across the border are very slim. She can't move to Canada permanently to be with you. In normal circumstances she could come as a visitor and you could then apply while she is here but not now. I think they would say her reason is non-essential and deny entry.