Reciprocal tariffs on trading partners are also in the mix as officials say “punitive” tariffs on Mexico and Canada were only a small slice of trade agenda.

President Donald Trump says he will also impose "reciprocal tariffs" on any countries who place tariffs on the US.

President Donald Trump said he will announce on Monday that the United States will impose 25% tariffs on all steel and aluminum imports. The tariffs will apply to “everybody,” including from Canada and Mexico, he said, and import duties will come later in the week.