The Ford F-150 pickup truck has been the United States' bestselling vehicle for years. In Dearborn, a city near Detroit, a factory that once produced Henry Ford's Model A now cranks out one every 53 seconds.
The F-150 is so profitable — informed rumors suggest that each adds nearly $13,000 to Ford's bottom line — that it is known around town as "the bank."
It is also assembled in the United States with more American parts than most vehicles, and so about as impregnable as they come to President Donald Trump's trade policies. Even so, more than 15 percent of each pickup comes from Canada and Mexico and another 15 percent from outside North America.
"Tariffs on Canadian aluminum hit the F-150 hard," confirmed a top logistics manager.
The tariffs in question are Trump's duties of 10 percent on imported aluminum and 25 percent on imported steel, which took effect on June 1. They are not the only source of disruption to an industry responsible for $522 billion of exports and imports a year, more than one-tenth of the United States' trade.
Earlier this year, Trump levied tariffs on $34 billion of Chinese goods, including one of 25 percent on cars (another $16 billion of goods were hit last week).
China retaliated by raising its tariff on U.S. cars from 25 to 40 percent.
Partly because of pressure to renegotiate the North American Free Trade Agreement (NAFTA), the president has also threatened a 25 percent tariff on all car imports, invoking a provision of an old law which allows him to restrict trade to safeguard national security.