<P> His anti-globalization policies of trade protectionism often cross party lines . For example, U.S. Senator Bernie Sanders applauded the withdrawal from the Trans - Pacific Partnership, saying "For the last 30 years, we have had a series of trade deals (...) which have cost us millions of decent - paying jobs and caused a' race to the bottom' which has lowered wages for American workers ." </P> <P> According to economic experts canvassed by PolitiFact, the tariffs could help create new manufacturing jobs and lead to some concessions from the U.S.'s foreign trading partners, but consumer costs and production costs would almost certainly rise, the stock market would fall, interest rates could rise, and trade wars could occur . PolitiFact noted that lower - income consumers in the United States would be hurt the most . Similar concerns were expressed by the tariffs imposed by the Obama administration . </P> <P> On March 1, 2018 Trump announced his intention to enforce a 25 percent tariff on steel and a 10 percent tariff on aluminum imports . In a tweet issued the next day, Trump asserted that "Trade wars are good, and easy to win ." On March 8, he signed an order to impose the tariffs effective after 15 days . Canada and Mexico are exempt from the order under a carve - out provision . An administration official later said that the exemptions for Canada and Mexico were not permanent, but depend on their renegotiating NAFTA to Trump's liking . Trump and his aides said that extending exemptions to other countries was possible, with Trump specifically citing Australia as a possibility . The tariffs went into effect March 23, 2018 . </P> <P> On March 22, 2018 the White House announced that it would suspend the tariffs on the following countries: Canada, Mexico, the European Union, Australia, South Korea, Brazil, and Argentina until May 1, 2018 . </P>

When do the steel tariffs go into effect