It always was, now it's being promoted

Western Family flour on the shelf at Save-On Foods

See that little "Product of Canada" sign on the shelf? That means that, "At least 98% of the total direct costs of producing or manufacturing the good have been incurred in Canada".

This bag of flour has always been a "Product of Canada", but it was not until the US threatened to slap a 25% tariff on all Canadian-made goods that brands and retailers started to make such a big deal out of country of origin.

The other category of Canadian goods is "Made in Canada". (See sign below.) 

"Shop Canadian" sign at Save-On Foods

As the sign states, "Made In Canada" has a lower threshold for Canadian content. "At least 51% of the total direct costs of producing or manufacturing the good have been incurred in Canada".

Not as Canadian, but for Canadian patriots still preferable to made elsewhere.

I think we'll see more of this sort of country of origin branding on in-store signage, and I fully expect to see this declaration to appear more prominently on product packaging very soon.