“They're dumping steel and destroying our steel industry, they've been doing it for decades, and I'm stopping it. It'll stop,” he told reporters on Air Force One during a flight from the United States to France.
“There are two ways: quotas and tariffs. Maybe I'll do both,” he said.
Steel stocks rallied on the news, recovering some of the year-to-date declines in the sector.
The S&P 1500 steel sector index added as much as 3 per cent shortly after Trump's remarks. The index rallied nearly 40 per cent in the weeks following the 8 November election, but so far this year it was down 6.6 percent at Wednesday
On Thursday, the VanEck Vectors steel exchange-traded fund rose 0.6 per cent after being down 1 percent before Trump's remarks. AK Steel shares gained 7.9 per cent, Nucor gained 2.6 per cent and US Steel added 4.0 per cent.
Trump's action on steel is a part of a campaign pledge he made to help revive US manufacturing. The administration's decision on steel could be unveiled in the coming weeks.
Mr Trump also said he would invite Russian President Vladimir Putin to the White House.
“I don’t think this is the right time, but the answer is yes, I would,” Trump said when asked if he would extend such an invitation to the Russian leader.
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