In the 48 hours before new tariffs on Canada and Mexico were scheduled to go into effect, there was a huge sell-off in just about every single cryptocurrency, including market leader Bitcoin (CRYPTO: BTC). At one point, Ethereum (CRYPTO: ETH) was down as much as 25%. While many cryptos subsequently recovered after the implementation of the tariffs was put on hold, those 48 hours offer a cautionary tale for anyone thinking about investing in crypto as the tariff war heats up.