President Donald Trump has unveiled plans for sweeping new import taxes on all goods entering the US, in a watershed moment for global trade.
The plan sets a baseline tariff on all imports of at least 10%, consistent with a proposal Trump made on the campaign last year.
Items from countries that the White House described as the "worst offenders", including the European Union, China, Vietnam and Lesotho, would face far higher rates for what Trump said was payback for unfair trade policies.
Trump's move breaks with decades of American policy embracing free trade, and analysts said it was likely to lead to higher prices in the US and slower growth in the US and around the world.
The White House said officials would start charging the 10% tariffs on 5 April, with the higher duties starting on 9 April.
"It's our declaration of economic independence," Trump said in the White House Rose Garden against a backdrop of US flags.
The Republican president said the US had for years been "looted, pillaged, raped and plundered by nations near and far, both friend and foe alike".
"Today we are standing up for the American worker and we are finally putting America first," he said, calling it "one of the most important days, in my opinion, in American history."
On the campaign trail last year, Trump called for new tariffs that he said would raise money for the government and boost manufacturing, promising a new age of American prosperity.
He has spent weeks previewing Wednesday's announcement, which follows other orders raising tariffs on imports from China, foreign cars, steel and aluminium and some goods from Mexico and Canada.
The White House said the latest changes would not apply to Mexico and Canada, two of America's closest trading partners.
Goods from the UK are set to face a new 10% tariff, while import taxes on items from the European Union would go to 20%.
The charge for goods imported from China will be 34%, while it will be 24% for Japan, and 26% on India.
Some of the highest rates will be levied on smaller countries, with goods from the southern African nation of Lesotho facing 50%, while Vietnam and Cambodia will be hit with 46% and 49% respectively.
The latter two have both seen a rush of investment in recent years, as firms shifted supply chains away from China following Trump's first term.
Together the moves will bring effective tariff rates in the US to levels not seen in decades.
Trump also confirmed that a 25% tax on imports of all foreign-made cars, which he announced last week, would begin from midnight.
Deputy First Minister Kate Forbes says the new 10% levy will have a negative impact on Scotland's economy.
Economists say the president's import taxes could result in higher prices for a range of products in the US.
Tariffs are a key part of Trump's political vision, but economists fear they could spark a trade war.
The UK has been hit with 10% tariffs by the US, but there is uncertainty of the impact of them.
The US president said universal 10% tariffs would go into effect for all countries starting 5 April.
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