Prime Minister Theresa May is "bitterly disappointed'' by a US Department of Commerce decision to impose a tariff of nearly 220% on a new model of passenger jet manufactured by Bombardier, one of Northern Ireland's biggest employers, Downing Street said.
The comment came after Ms May was accused of being "asleep at the wheel" as unions warned that thousands of jobs could be put at risk by the US move.
More than 4,000 people are employed in Belfast by Canadian multinational Bombardier and thousands more jobs in Northern Ireland are supported through the manufacturer's supply chain, according to trade unionists.
Ms May had lobbied US President Donald Trump over the dispute, which was sparked by complaints from rival Boeing that Bombardier received unfair state subsidies from the UK and Canada, allowing the sale of airliners at below cost price in America.
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