President Trump's most sweeping tariffs face a landmark test of presidential powers, as the US Supreme Court is set to rule on the implications and legality of Trump's global duties on trade partners.

The Trump administration has numerous tariffs in place, impacting global trade and relations with dozens of countries. Here's what to know.

The tariffs will allow President Trump to take a cut of Nvidia’s chip sales to China while putting off a decision about imposing higher taxes on the chip industry.

President Trump said Monday he's imposing 25% tariffs on all countries that do business with Iran, as the administration pressures the Iranian government amid anti-regime protests.

The levies apply to a “very narrow category” and codifies Trump’s plan to take a cut of chip sales to China. A broader tariff could still come.

"Trump’s tariff wars are generating uncertainty, pockets of economic dislocation, an erosion of trust in the United States, and amplifying the risks inherent in China–U.S. competition," writes Pratap

President Donald Trump offered a full-throated defense of his sweeping tariffs on Tuesday, traveling to swing-state Michigan to push the case that he’s boosted domestic manufacturing in hopes of countering fears about a weakening job market and still-rising prices that have squeezed American pocketbooks.

China’s trade surplus widened to a record $1.2 trillion last year, even as the Trump administration targeted the world’s second-largest economy with lofty tariffs to reduce such trade imbalances.