Growing anti-free-trade rhetoric from the United States is causing growing concern on both sides of the border.

Depending on the day — and, it seems, with whom he last spoke — President Donald Trump has variously said he wants to tear up the North American Free Trade Agreement (NAFTA) or simply tweak it.

There has also been talk of a general border-adjustment tax, further adding to anxious nerves among businesses that rely on cross-border trade.

This was excerpted from the 4 May 2017 edition of CBC News.