His warning on trade — combined with his repeated calls for the United States to annex Canada — has the country’s flag makers struggling to keep up with suddenly soaring demand.

But in recent weeks, one particular item has had trouble staying on its shelves: the Canada Flag. Michael Osterer, manager of Irving Rivers, says the red-and-white flag is typically a popular item ...

said Hartlen, who owns The Flag Shop Nova Scotia. “Thank you, Trump. Who would have thought we’d be saying that?” The renewed interest in Canada’s maple leaf flag, fuelled by intense ...