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Some economists are detecting signs in data that trade tensions are having an impact on American companies.

To understand what a trade war means for America, go to the Mississippi. Follow the mud-brown river past Louisiana’s chemical plants, oil refineries, granaries, ports, and the rail networks and highways that spring from its fingers.

Auto manufacturers and suppliers based outside the United States condemned the Trump administration’s investigation into imports of cars and parts by portraying as absurd the idea that their products pose national security risks.

Treasury Secretary Steven Mnuchin is signaling his displeasure with President Donald Trump’s trade war with China by saying nothing at all.

German automotive stocks fell after U.S. President Donald Trump threatened to impose a 20% tariff on all European car imports, escalating his demand for concessions aimed at lowering the U.S. trade deficit.

Over the past three decades, the global auto industry has gotten, well, more global. Manufacturers built scores of factories outside their home countries to reduce exposure to currency swings, take advantage of cheaper labor and manufacture cars closer to buyers.

New tariffs on imports from China may leave American companies with a choice — pay a higher freight bill now or pay the tariffs starting soon.

The U.S. economy is booming this quarter as tax cuts power consumers and businesses. Yet risks are mounting that the high will be short-lived.

Commerce Secretary Wilbur Ross made a trade betting that the stock in a shipping company with Russian-government ties would fall, a transaction coming just days after he learned of a possible negative news story about his investment in the company.

When Volvo Car Group broke ground on its first U.S. assembly plant in 2015, it was a proud proof point for the Swedish automaker’s rebound and global expansion, not a chess move in anticipation of a possible trade war.