Korean steelmakers are expected to suffer losses from Trump's higher tariffs as South Korea is the third-largest steel exporter to the USA after Canada and Brazil.
Trump triggered global alarm last week when he announced he would sign off on measures created to protect USA producers, and defiantly swatted back at critics by saying trade wars are "good, and easy to win". "That the government should remain firm in its positions", he said.
That's why legislators from US states that export agricultural products are deeply concerned with Trump's action.
The strong reliance on Chinese steel and aluminum is because of the low prices they offer.
Or, being Congress and all, will they pass legislation removing Trump's authority to unilaterally levy new tariffs? It's not just the USA economy that will suffer: The tariffs would punish some of America's closest allies, including NAFTA partners and the EU.
In a dramatic split from their party's leader, Republicans and conservative groups have begun targeting with scorched-earth potency President Donald Trump's decision to introduce new tariffs, arguing that they would be a disaster for the U.S. economy and American workers. China said it would "protect its interests", and Canadian Prime Minister Justin Trudeau said he was "confident we're going to continue to be able to defend Canadian industry".
He also said the tariffs were "100 percent" happening.
Trump said he doesn't think the tariffs will provoke a trade war.
"We need to have a strategy in place to negotiate a good trade deal around NAFTA and to make sure the Canadian market is protected from unfair trading practices from other countries", says MacLean.
"We have a bad deal with Canada called NAFTA".
Trump has said he would back out of NAFTA if it is not renegotiated to his liking.
If the USA doesn't back down on tariffs, Canada has to be prepared to respond to that as well, said Neumann. Mr Lidington suggested the American authorities could overrule any tariffs, as they did in the case of aircraft manufacturer Bombardier when Mr Trump's administration threatened huge duties on its C-wing planes.