There’s a lot to digest in the new trade agreement that the United States, Mexico and Canada finalized in deadline-beating fashion on Sunday, starting with a name change.

For the seasonal salad at the popular Oz Kafe in Ottawa, the shavings of Gouda cheese are a salty and delicious culinary accompaniment. To the United States, they are an element of an increasingly bitter trade dispute over dairy products, one that threatens to undermine its decades-long agreement with Canada.