@evan You missed an important detail, I’m talking about partisan tactics on US soil. But mainly it’s leveraging divisions within American society. Remember that millions took to the streets to protest the Iraq war…a far-away conflict against “brown people” of a different religion who had “attacked” the US.
If steps 1 and 2 clarify their intentions, it would probably be easier for us and our allies to provoque a US civil war than for Trump to unify his fractured country againt Canada.