In Iowa, where farmers raise 40 million to 50 million pigs annually, President Trump’s tariffs on steel and aluminum from Mexico have already cost producers $560 million, according to an Iowa State University economist. How can that be, you ask. Mexico has threatened countervailing tariffs that include a 20 percent tariff on American pork. That prospect alone sent hog prices tumbling. If you like barbecued ribs, this could be a great summer for you. If you raise the pigs, you may be eating more barbecued beans.

Soybean growers throughout the Midwest are nervously watching as China, which buys a quarter of American soybeans, takes aim at their crop in response to the Trump administration’s announcement that it will move ahead with $50 billion in tariffs on “industrially significant technologies” in more than 1,000 categories. Trade between the two countries has been “very unfair, for a very long time,” the American president said in a statement. Mr. Trump vowed that he would add to that list if China retaliated — which is what most countries do in this situation. Indeed, the Chinese Ministry of Commerce has said to expect as much. Oh great, Middle America collectively sighs.

Local newspapers across the heartland are full of similar tales of value destruction and lost income as a result of Trump trade war tweetism. In Great Lakes states, traditional steel makers might benefit from the administration’s 25 percent tariff on foreign steel. But for steel users, it’s an entirely different story. Shortly after tariffs were announced, steel suppliers, no longer as fearful of price competition, began jacking up prices — they’re no fools. That has meant a 40 percent increase since January in the cost of steel for their customers who use it in their finished products, according to the U.S. Chamber of Commerce. They can either pass that increase on to you or be less profitable.

The story is the same with aluminum: Brewers are forecasting that they’ll pay $347.7 million more for aluminum cans. That has small craft-beer makers such as Melvin Brewing in Alpine, Wyo., which packages 75 percent of its products in cans, fretting about impending prices rises and the risks of passing them along to consumers. Try not to be bitter about it.