Trump was right: Canada does slap a 270% tariff on some U.S. dairy products. But the dairy trade picture is a lot more complex than the rhetoric. Tariffs don't apply to the first 10% of trade, and Canada remains the third-largest export destination for U.S. dairy — $636 million last year alone.
Blockchain, the encryption network best known for cryptocurrency transactions, can be used to trace retail produce back to its source in seconds. It might offer a faster way to solve food contamination outbreaks such as the E. coli infestation in romaine lettuce.