US pork farmers have asked Washington to erect 20% punitive countervailing and anti-dumping duties on Canadian pork imports to the US, claiming that Canada's national and provincial aid packages keep pork prices artificially low.

The United States National Pork Producers Council has alleged that Canadian pork is undermining American market prices and has also accused Canadian producers of dumping live pigs at cut-rate prices in the US.

That said, Canadian pigs make up a relatively small portion of the American pork market. Last year, roughly 7.4 million live pigs were exported from Canada to the US, while nearly 100 million US-bred pigs were slaughtered.