United States (US) President Donald Trump said “we'll see what happens” on the North American Free Trade Agreement (NAFTA) at the start of his meeting with Canadian Prime Minister Justin Trudeau at the White House on Wednesday.

Trump welcomed Trudeau to the Oval Office at the start of a new round of talks over NAFTA. The US president told reporters it will be a “tough negotiation.”

Trudeau said the two allies have a “good partnership” and added that an “ongoing, constructive relationship” between the two leaders is really important.

The two North American leaders are expected to discuss NAFTA and other trade issues during Trudeau's visit.

The meeting between the two North American leaders comes at the start of a new round of talks over the NAFTA, which Trump has threatened to withdraw from unless he can get a better deal.

Trudeau is also expected to raise the Trump administration's recent decision to hit Canadian manufacturer Bombardier (bahm-BAHR'-dee-yay) with punishing tariffs on its C Series airliner. US-based Boeing alleges that Bombardier gets unfair subsidies from the Canadian and British governments.

The Canadian prime minister is scheduled to visit Mexico on Thursday.