US President Donald Trump announced the tariffs in March as part of an effort to protect US industry and workers from what he described as unfair worldwide competition, a key theme of his "America First" agenda.
Trump's decision could raise prices for Americans on a range of everyday products. NAFTA renegotiations will be put in jeopardy by this move as well-the Trade Partnership estimates that withdrawal from NAFTA would cost the country a staggering 18 million jobs in the first year alone.
Trump accused Mexico - a location where US and European automakers conduct manufacturing - as having "taken" USA companies.
Mr Ross himself heads to Beijing today where he will attempt to get firm deals to export more United States goods in a bid to cut America's $375 billion trade deficit with China.
Fears of a global trade war are mounting as the Trump administration also considers tariffs on USA auto imports and duties on US$50 billion in Chinese goods.
French President Emmanuel Macron on Thursday said he "deplored" the U.S. move to impose harsh tariffs on steel and aluminium imports from the European Union, declaring it an "illegal" decision.
Trump also claimed nations admit in closed door meetings they are taking advantage of the USA, then compared them to the media, a group he regularly trashes.
The phone call between the French president and his USA counterpart came after the U.S. announced the steep metals tariffs would be imposed on the European Union, Canada and Mexico as of midnight. "They must open their markets and take down their trade barriers!" he wrote.
He also imposed a 10 percent tariff on aluminum imports.
"It is totally unacceptable that a country is imposing unilateral measures when it comes to world trade".
"Without a strong economy, you can't have a strong national security, ' he said".
"That Canada could be considered a national security threat to the United States in inconceivable".
Trudeau said Thursdays tariff announcement marks "a bit of a turning point, but we've always known that this administration is unpredictable".
The American exports targeted in the initial wave of European Union retaliatory tariffs are worth roughly €2.8 billion ($3.3 billion) annually, according to European Union officials. Mexico was the third largest, behind South Korea. As talks continue, Ross warned against any parties striking back.
Ross is scheduled to go to China this weekend for a third round of negotiations.
Last week, The Trump administration announced an investigation into whether automobile imports are hurting United States national security, laying the groundwork for another trade fight.
Such an action could hurt Mexico, Canada, Germany and Japan.