By MATT O’BRIEN

AP Technology Writer

President Donald Trump’s plans for 100% tariffs on computer chips that aren’t made in the U.S. are stoking confusion among businesses and trading partners — boosting stocks for leading semiconductor companies while leaving smaller producers scrambling to understand the implications.

The U.S. imports a relatively small number of chips because most of the foreign-made chips in a device — from an iPhone to a car — were already assembled into a product, or part of a product, before it landed in the country.

“The real question everybody in the industry is asking is whether there will be a component tariff, where the chips in a device would require some sort of separate tariff calculation,” said Martin Chorzempa, a senior fellow at the Peterson Institute

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