It's all Canadian. While certain states in the U.S. like Colorado have legalized it, because it's still illegal on the federal level, importing from the U.S. is just about impossible.
The cannabis is Canadian by law but many of our cannabis producers are owned by American companies so you still need to check the brands and research their parent companies
Wouldn't it be pretty much everything? It's still federally illegal here in the states so it can't go over the border even if made in a legal state. If you're not buying off the black market but at a dispensary, I'm pretty sure you're not going to be buying American imported weed.