The nation's highest court struck down some of U.S. President Donald Trump's most sweeping tariffs on Friday, in a 6-3 decision ruling that he overstepped his authority when using an emergency powers law to justify new taxes on goods from nearly every country in the world.

U.S. President Donald Trump said he will raise a temporary tariff on U.S. imports from all countries to 15% from 10%, following a Supreme Court decision striking down a large swath of his tariffs.

"I, as President of the United States of America, will be, effective immediately, raising the 10% Worldwide Tariff on Countries, many of which have been 'ripping' the U.S. off for decades, without ret...