"We continue to be quite willing and indeed eager to have further discussions", Ross said.
"There can be negotiations with or without tariffs in place".
"We are alienating all of our friends and partners at a time when we could really use their support", said Wendy Cutler, a former USA trade negotiator who is now vice president at the Asia Society Policy Institute.
European leaders also vowed to proceed with a complaint to the World Trade Organization. Tariffs will remain on imports from Japan.
EU Trade Commissioner Cecilia Malmstrom and Japanese Economy Minister Hiroshige Seko on Thursday warned against such a measure, saying it would cause "serious turmoil in the global markets".
The tariffs, which have prompted several challenges at the WTO, are aimed at allowing the US steel and aluminum industries to increase their capacity utilization rates above 80 percent for the first time in years. Ben Sasse, R-Neb. "We've been down this road before-blanket protectionism is a big part of why America had a Great Depression. It's not that we can't talk just because there's tariffs". "There is a feeling that if we respond too strongly, this will escalate, and that would damage everyone, but Europe would damaged most of all".
But EU leaders have immediately vowed to retaliate against the United States, with the bloc ready to launch a case at the World Trade Organisation (WTO) where it will trigger a "dispute settlement" as it believes the USA are breaking agreed worldwide trade rules.
Petrol price cut by 60 paise per litre, diesel by 56 paise
The reduction would cause a yearly loss of Rs 509 crore to the state exchequer on the tax front, he said. Delhi has the cheapest price among all metros and most state capitals.
White House spokesman Raj Shah told Fox News: "The president's actions are about protecting American steel, American aluminum".
About 20 million tonnes of Chinese steel would need to "find a new home to go to and, because we are a free and open market here in the UK/the European Union, it'll come here, we believe, and therefore further damage our sector - not only from the direct impact of tariffs in the USA but the surge of steel coming here", he said. "They're critical for national security".
Foreign Affairs Minister Chrystia Freeland, who pushed the steel and NAFTA issues during her meeting on Tuesday in Washington with US trade czar Robert Lighthizer, has also made it clear that Canada would retaliate if the duties are imposed. That hurts the companies and can lead to more expensive consumer prices, economists say.
"It is totally unacceptable that a country is imposing unilateral measures when it comes to world trade".
In a clear reference to Trump, Macron added: "These solutions might bring symbolic satisfaction in the short term".
Nafta talks continue, with a deal needed probably within days to have any hope of passing the current US congress and with Mexican elections one month away.
Ross criticized the European Union for its tough negotiating position. French Finance Minister Bruno Le Maire pledged that the European response would be "united and firm". The Washington Post's James McAuley contributed reporting from Paris and Griff Witte reported from Berlin.