U.S. President Donald Trump's plans to impose 50% tariffs on copper would include semi-finished products such as those used for power grids, the military and data centers, Bloomberg News reported on Thursday,

The president has published just 22 letters, many to minor trading partners like Brunei, Moldova and Sri Lanka.

The sector-specific tariffs are putting pressure on businesses and foreign nations as they try to navigate Trump's constantly evolving trade agenda.

U.S. President Donald Trump on Tuesday said he would impose a 50% tariff on imported copper and soon introduce long-threatened levies on semiconductors and pharmaceuticals, broadening his trade war that has rattled markets worldwide.

Price increases could hit coffee, shoes, appliances and other products as a result of President Donald Trump’s new tariffs in recent days, analysts told ABC News.

Brazil spent months flying under the radar as Donald Trump upended global trade. Now that it’s in the spotlight, President Luiz Inacio Lula da Silva may stand to benefit from the attention.