I dont think i want meat from most countries in those regions. Food safety regulations are not made equal everywhere. I wouldnt want any from the US either
Usually, the food regulations of the country you're importing into is what counts. So in order to export to you, a product has to fulfil your country's rules.
What's to worry about is the labour and environment laws of the country your product comes from.
I don't know about their regulations, but countries like Argentina, Brazil, South Africa, Australia, and Japan are famously exporters of some of the most sought after meat in the world..
Canada has pretty decent protections in place for consumers, and meat has to hit the Grade Requirements for imported meat products.
additionally - employees at meat packing plants in the U.S. enjoy when they are processing meat for sale to Canada, because the processing lines slow down significantly, (meaning they don’t have to work at as much of a frantic pace), to meet Canadian standards.