President Donald Trump said Wednesday he will impose a tariff of roughly 100% on all semiconductors and computer chips entering the United States, escalating his drive to bring production of critical components back onshore. Speaking to reporters in the Oval Office, Trump said the levy would apply to “all chips and semiconductors coming into the United States,” but companies that manufacture domestically or have formally committed to build plants in the country would be exempt. “If you’re building in the United States, there’s no charge,” he noted. Trump added that Apple Inc. and Nvidia Corp. would avoid the duty because of their U.S. investment plans. Apple last week unveiled an additional $100 billion domestic-spending program, lifting its cumulative commitment to about $600 billion, while Nvidia has also expanded manufacturing operations in the country, according to the president. The White House did not specify when the new tariff would take effect or outline implementation details. The measure follows April’s 145% tariff on Chinese goods and is intended to further accelerate domestic chip manufacturing, though it may raise costs for electronics makers relying on overseas fabrication.