A growing consumer push to buy Canadian and boycott US products is ⁠reshaping supermarket shelves in Canada, forcing grocers to improve country-of-origin labelling and secure new sources of supply. In Ontario, the president of independent grocer Vince’s Market, Giancarlo Trimarchi, turned to social media to show customers that most produce on the shelves of his stores is Canadian after receiving angry emails and comments about the grocer stocking US produce. A bitter trade war between the United...