traders are unlikely to push BTC much lower over Washington's current Canada duty after buyers reversed a 2.91% post-implementation drop and returned BTC to 0.14% below the implementation level. the 50% rate covers about $20b of goods, roughly 5% of Canada's annual exports to the U.S., the more directly exposed Canadian dollar weakened 0.5%. if Ottawa follows through on September 8 and both governments add enough tariffs to produce a sustained stock selloff, leveraged traders can cut crypto exposure and push BTC lower.