Trump warns other countries they ‘won’t be dancing for long’ as he slaps a 10 per cent global levy on the USA’s trade partners after judges ruled his original tariff regime was unlawful

Donald Trump reacted with outrage last night after the US judges threw out his ‘beautiful’ tariff plan – but warned those celebrating ‘won’t be dancing for long’.

In a ruling that could have major consequences for world trade, the Supreme Court said President Trump had exceeded his authority by imposing his ‘Liberation Day’ tariffs last year without Congressional approval.

Mr Trump said he was ‘ashamed’ of the ruling, adding that America’s highest court had been ‘swayed by foreign interests’. But he vowed to find another route to maintain tariffs.

Speaking at an emergency press conference at the White House last night, Mr Trump said the judges who threw out his plan were ‘a disgrace to our country’.

But he said he was already working on ‘alternative’ methods for protecting US industry, saying that ‘even stronger methods are available to me’.

He said that ‘foreign countries that have been ripping us off for years are ecstatic’ at the court’s ruling.

In a blunt warning, he added: ‘They are dancing in the streets – but they won’t be dancing for long.’

Mr Trump said he was imposing an immediate ’10 per cent global tariff over and above existing tariffs’, as well as examining other protectionist measures.

President Trump holding up a board displaying reciprocal tariffs for countries on his self-proclaimed ‘Liberation Day’ in April last year

Trump during an emergency press conference at the White House on Friday, where he said he was ‘ashamed’ of the Supreme Court ruling, adding that America’s highest court had been ‘swayed by foreign interests’

Some experts claimed that the US may now have to refund more than £130billion to firms that paid the tariffs following Liberation Day in April last year. But Mr Trump suggested he was ready to fight any compensation claims in the courts for years.

The ruling only affects the so-called ‘reciprocal’ tariffs imposed on individual countries, including the 10 per cent levied on British imports. It does not impact the targeted tariffs on sectors such as steel and cars, which could not be expanded.

Downing Street was last night scrambling to calculate the likely impact on trade and relations.

A Government spokesman said: ‘The UK enjoys the lowest reciprocal tariffs globally, and under any scenario we expect our privileged trading position with the US to continue. We will work with the US administration to understand how the ruling will affect tariffs for the UK and the rest of the world.’

Last night, Kemi Badenoch welcomed the ruling, saying tariffs are ‘bad for both sides’.

The Tory leader, who served as trade secretary in the last government, said: ‘The UK is a trading country. So overall, this is good news for us. Let’s hope it holds.’

Mr Trump’s tariffs stunned world leaders last year and threw global markets into turmoil as he claimed the US economy had been ‘looted, pillaged and raped’ for years.

But the Supreme Court, which has a conservative majority, yesterday ruled by six to three that the International Emergency Economic Powers Act used to bring in the blanket measures ‘does not authorise the President to impose tariffs’.

Carsten Brzeski and Julian Geib, analysts for ING, warned that US tariffs are ‘here to stay’ but with ‘new legal foundations and a messy transition period’.

They added: ‘Europe should not be mistaken, this ruling will not bring relief.’