northern neighbor for its trade relationship with the u.s., and his new biggest complaint canada s 270% tariff on imported milk. canada does charge that on some. and even more on butter, but it s a relatively narrow slice of the trade pie. canada isn t unusual, though. most countries do this with certain products to protect ways of life. america charges a 350% tariff on some tobacco imports, and clothing and footwear face tariffs as high as 55%. many think president trump is missing the bigger picture. after all, canada is america s biggest export market. it bought more than $340 billion worth of goods last year. when you take services into account, not just goods. the u.s. has an $8.4 trillion