President Trump signaled on Sunday that he would pursue new tariffs on the powerful computer chips inside smartphones and other technologies, just two days after his administration excluded a variety of electronics from the steep import taxes recently applied on goods arriving from China.
The push came as Mr. Trump’s top economic advisers scrambled to explain their shifting strategy, after having insisted for weeks that they would shield no company or industry from any of the fees they have levied in a bid to reset U.S. trade relationships.
The reprieve for technology companies arrived in the form of a Customs and Border Protection rule issued late Friday that spared high-tech imports from Mr. Trump’s so-called reciprocal tariffs, including those on China. While the president paused a set of punishing levies on nearly 60 countries last week, his administration has forged ahead with a new 145 percent tax on Chinese exports, announcing it after Beijing retaliated against the United States.
The exclusions in the C.B.P. rule covered a wide slate of products, such as computers, smartphones, modems and flash drives, and it represented a major victory for Apple, and other U.S. technology giants, which rely on Chinese factories to help manufacture important components and popular devices. Apple executives had even been in contact with Trump administration officials about the Chinese tariffs in recent days, according to two people with knowledge of the company’s efforts. The company declined to comment.
But on Sunday, Mr. Trump and his top aides cast the exemptions in a different light, framing them as only a temporary break while the government prepares more targeted import taxes on key technologies. The administration is expected to take the first step toward enacting the new tariffs as soon as next week, opening an investigation to determine the effects of semiconductor imports on national security.
The approach appears to mirror the process that yielded Mr. Trump’s tariffs on other specific products and sectors, including the high fees he imposed on foreign cars and auto parts this year. On social media, the president signaled Sunday that the scope of his next inquiry would be broad, “taking a look at Semiconductors and the WHOLE ELECTRONICS SUPPLY CHAIN in the upcoming National Security Tariff Investigations.”
