CBC News - Politics

U.S. President Donald Trump said he will announce on Monday that the United States will impose 25 per cent tariffs on all steel and aluminum imports, including from Canada and Mexico, as well as other import duties later in the week.

The clock continues to wind down on U.S. President Donald Trump's next deadline for imposing sweeping tariffs on Canadian goods. In the meantime, some American lawmakers are pushing the president to back off tariffs altogether — and they hope Canada notices.

There's been a lot of chatter about interprovincial trade barriers lately — namely, that Canada should remove them, with federal and provincial officials saying that opening up domestic trade could soften the impact of potential U.S. tariffs. But what are these barriers, and how do they impact our daily lives?