Mr Trump's announcement of import tariffs of 25% on steel and 10% on aluminium has sparked fears of a trade war.
"We know the tremendous effort that steel and aluminum workers put in every day to provide for their families, support their communities, and build businesses that are competitive in the global market".
While it was not entirely clear whether the threat reflected actual U.S. policy or merely an effort by the president to play to an appreciative crowd, he had used similar language earlier on Twitter. A major topic of conversation among attendees was steel and aluminum - and what President Donald Trump's planned tariffs will mean for the housewares industry. In some cases, such as aircraft made by the Brazilian company Embraer, the US allows products to be partly manufactured overseas, as long as they are finished domestically. Gems and diamonds are India's biggest goods exports to the United States, followed by pharmaceuticals, textiles, fish and petroleum products. "It's crap", Trump said, earning cheers from the crowd.
Freeland said it was absurd to consider Canadian steel a national security threat and that "as far as Canada is concerned there is absolutely no connection" between the national security reasons cited for the steel tariffs and NAFTA.
Dow Chemical says steel accounted for roughly 20% of the cost of the $6 billion in petrochemical projects it has completed on the Gulf Coast.
In the end, Trump's tariffs might help him win the battle for Ohio, Michigan, Pennsylvania or Wisconsin, but they will lose him the war in terms of trade.
"We can't even sell our farming goods in there, they totally restrict us".
U.S. industries processing steel and aluminium have also criticised the tariffs as landing them with higher costs.
Earlier Mr Turnbull had ruled out Australia joining an global revolt against the steel tariff or a 10 per cent tariff on aluminium.
The EU is also maintaining a threat of counter-measures that would target U.S. imports ranging from maize to motorcycles, and may publish its list next week to allow industry and other interested parties to give their input.
Following the close of the seventh round of negotiations last week in Mexico, U.S. Trade Representative Robert Lighthizer said the U.S. wants to get a deal done in the next four to six weeks.
U.S. President Donald Trump took another shot at Canada's trade practices Saturday, alleging that Canadian leaders have taken advantage of bumbling American politicians "for decades". In announcing the measures, European Commission head Jean-Claude Juncker taunted Trump, saying the EU could match "stupid with stupid".
Australia's fair trade relationship with the United States could be held up as an example of what President Donald Trump hopes to achieve with other nations, Malcolm Turnbull believes.
Moreover, in my judgment, dire predictions that this latest round of steel tariffs will spark a trade war with other nations are overblown. Having made little progress in Congress on several GOP priorities, Republican candidates have been banking on a strong economy and the growing popularity of the party's tax overhaul to combat a Democratic electorate energised by its disdain for Trump.
Warren, a longtime consumer-protection advocate and possible 2020 presidential candidate, was asked about the tariffs on CNN.
European Competition Commissioner Margrethe Vestager said that, if talks to secure exemptions failed, Brussels would impose countermeasures.
The big worry is that United States trading partners will retaliate.