Ontario has launched a multimillion-dollar U.S. ad campaign touting economic and cultural ties between the province and its southern neighbour as Canada faces the threat of 25 per cent tariffs enacted by president-elect Donald Trump.

The ads will highlight the strong trading relationship between Ontario and the United States, focusing job creation, critical minerals and energy

Trump has threatened to impose tariff on all Canadian and Mexican goods unless both countries secured their shared borders with the US.