Politicians have warned that nine thousand jobs in the Welsh steel industry could be at risk after the introduction of US tariffs.
President Donald Trump imposed 25% tax on all steel imports into the United States earlier this year.
But the temporary exemption given to steel producers across Europe expired today meaning exporters to the US market will face tariffs of 25%.
It's feared that this could lead the industry here back into crisis.
First Minister Carwyn Jones said the tariffs are “disappointing and short-sighted” as he meets with with business leaders and diplomats in Washington DC.
He will also hold high level talks with senior representatives of the British Embassy to express his serious concerns about the potential impact US tariffs will have on the Welsh steel industry.
The United States is Wales’ largest inward investor.
The value of Welsh exports to the USA was worth £2.3 billion in 2017, meaning that the USA is Wales’ third largest export destination.
Best for Britain say Trump's steel tariffs will 'wreck' Wales' post-Brexit steel industry and pose an 'existential threat' to the Welsh steel industry
Welsh Secretary Alun Cairns spoke to the First Minister of Wales, Carwyn Jones, about the tariffs, saying the Government was seeking a solution.
The EU is set to take action against the US at the World Trade Organisation, while imposing duties on American imports expected to include orange juice, peanut butter and other goods.
International Trade Secretary, Liam Fox, said he would speak to US commerce secretary Wilbur Ross about the situation again on Monday.