The tariffs U.S. President Donald Trump imposed last week on scores of countries are likely to stay in place rather than be cut as part of continuing negotiations, Trade Representative Jamieson Greer said on Sunday.

President Donald Trump said the US will put a 35% tariff on some imports from Canada, escalating the tensions between two countries that have impaired one of the world’s largest trading relationships.

After Canada failed to strike a trade deal with Washington, the president raised tariffs on some Canadian exports this week.