Canada gets threatened with tariffs because forest fire smoke is likely to disrupt his weekend rounds of golf in Bedminster NJ. Meanwhile China/Russia rigging American elections apparently doesn't rise to the level of needing to threaten tariffs.
Catherine RampellTrump has the tariffs thing wrong. we have huge tariffs on canadian lumber. if we reduced them maybe canada would chop down all their trees and sell the wood to us. voila, no more forest fires