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What to know about Trump's tariffs and their impact on businesses and shoppers

NEW YORK (AP) — U.S. President Donald Trump's long-threatened tariffs are here, plunging the country into an escalating trade war with China, Canada and Mexico.

Trump’s 25% tariffs on imports from Canada and Mexico went into effect Tuesday, along with a heightened 20% levy on Chinese goods. In response, all three countries announced retaliatory measures.

Experts say consumers and businesses will be the hardest hit. Companies big and small will face higher costs on the goods they buy from other countries — and could have little recourse but to hike prices themselves. For consumers, that will likely mean more expensive price tags on everything from cars, appliances and other big-ticket items to smaller, everyday purchases including electronics, gasoline and groceries.

How are Canada, Mexico and China responding?

Canada, Mexico and China all declared on Tuesday that they would impose retaliatory taxes on many U.S. products.

China is imposing tariffs of up to 15% on a wide array of key U.S. farm exports, including American-grown chicken, pork, soy and beef. It also expanded the number of U.S. companies subject to export controls and other restrictions by about two dozen.

Meanwhile, Canadian Prime Minister Justin Trudeau announced that his country would slap tariffs on more than $100 billion of American goods over the course of 21 days. And Mexican President Claudia Sheinbaum said her country will respond with its own retaliatory tariffs on U.S. goods. Unlike Canada or China, however, she said she would not announce specific tariffs until Sunday — possibly indicating that Mexico still hopes to de-escalate the trade war.

“All of the economies involved in the tariffs will see a loss in their real GDP (gross domestic product) and increasing consumer prices in general," said Wendong Zhang, an assistant professor of applied economics and policy at Cornell University.

Canada and Mexico will suffer considerably more than the U.S. because of the U.S. economy’s size and strengthening dollar, Zhang added. For the U.S., the combined tariffs on China, Canada and Mexico could result in about a 0.4% GDP loss, amounting to over $100 billion, he said.

The tariffs may be short-lived if the U.S. economy suffers. But Trump could also impose more tariffs on additional countries such as India or EU nations, and more products such as computer chips and pharmaceutical drugs. The president has injected a disorienting and unpredictable volatility into the world economy, leaving it off-balance as people wonder what he will do next.

What is the impact on US businesses?