In the Canadian sunshine here in the Rockies at the G7 summit, President Trump emerged from a meeting with Sir Keir Starmer brandishing a folder. Within it was the deal US and UK officials have been putting together to flesh out a tariffs agreement struck last month. Alas, Trump's papers broke free and tumbled to the tarmac.

U.S. President Donald Trump said on Monday a new economic deal with Canada was possible but stressed tariffs had to play a role, a position that the Canadian government strongly opposes.

The tentative agreement between the White House and Beijing would, among other things, allow Chinese students into American universities again.