Like many shoppers these days, Stacey Dineen, who lives just outside Kitchener, Ont., is all-in on the buy Canadian movement. 

"Trump's comments about annexing Canada, wanting to make us part of the United States, boy, that really kind of lit something," she said. 

Dineen buys Canadian food whenever she can, but when she can't, she looks for imported products from outside the United States. 

And Canada's major grocery chains have jumped on the trend, running patriotic ads and pledging to help shop…