WASHINGTON—President Trump imposed a 25 percent tariff on Chinese technology imports, including advanced semiconductors and artificial intelligence components, delivering a win to domestic chip manufacturers who spent millions lobbying for protection against subsidized Chinese competitors.

The Semiconductor Industry Association spent $5.3 million on lobbying in the first quarter, advocating for policies that bolster U.S. production and reduce reliance on foreign supply chains. The new duties give those companies exactly what they sought—higher barriers for Chinese rivals.

The administration cited national security concerns and unfair trade practices as reasons for the tariffs. Treasury Secretary Janet Yellen said the duties aim to level the playing field for American industries, though she acknowledged potential inflationary pressures for consumers.

Economists project a one to two percent increase in consumer prices for affected goods over the next six months as companies adjust supply chains. Companies like Apple, which sources numerous components from China, could face increased production costs.

Major U.S. indices rose on the news, with the Nasdaq Composite up 2.0 percent and the S&P 500 gaining 1.5 percent. Apple shares rose 1.2 percent despite the company's exposure to Chinese supply chains. U.S.-based manufacturers of similar components may see a competitive advantage.

The administration's strategy seeks to compel China to address intellectual property theft and forced technology transfers, long-standing grievances of U.S. trade officials. The move also aligns with a broader push to decouple critical technology sectors from China.

China's Ministry of Commerce is expected to issue a formal response within 48 hours, with counter-tariffs on U.S. agricultural exports or aerospace components considered likely. U.S. Trade Representative Katherine Tai is scheduled to testify before the House Ways and Means Committee next Tuesday to discuss the administration's trade strategy and the implications of the new duties.