When the Trump administration arbitrarily imposed 15% tariffs on New Zealand exports on August 1, up from a previously announced 10%, no one should have been surprised. “Reciprocal” tariffs, based on the difference in value between what the United States imports from and exports to other countries,

What you need to know about the trade court dispute, which Trump has called "America's big case," and how it's likely to play out in the months ahead.

Under the executive order, Trump kept an existing baseline 10% tariff for about 100 countries where the U.S. exports more goods than it receives. Reciprocal tariff rates for 70 countries will range from 15% to 41%.