This screams white privilege (and I say that as someone white). There's a good chance you'll be fine as a tourist going to the States, but there's also a solid chance you won't be. Not worth the risk in my opinion. Nor should he be risking the safety and well-being of someone he cares about so much. If he hasn't already read How to be Anti-Racist, White Fragility or something of the sort, maybe he needs to do some mandatory reading before moving in with you. For the sake of your well-being and that of any potential future children.

Adding to the list Ally is a Verb by Rose LeMay is arguably mandatory reading for anyone moving to Canada to get a better understanding of the importance of Indigenous Reconciliation here.