By Manny Paiva
Federal government considers next step as U-S refuse to make changes to country of origin labels.
Canada has a big beef with Washington over meat labelling.
American lawmakers have refused to make changes to country-of-origin labelling sought by the Canadian government and beef and pork producers.
Agriculture Minister Gerry Ritz and International Trade Minister Ed Fast say Canada may retaliate by imposing tariffs on some American products.
The COOL rules are blamed for complicating meat and livestock imports into the U-S from Canada.
The laws have also reduced the amount of Canadian exports to the country by half since 2008.
Agriculture officials have confirmed a second case of a deadly pig virus at an Ontario farm and are investigating a third.
The P-E-D virus is usually fatal for very young pigs while older pigs can recover, but isn't a threat to food safety.
The first case was confirmed last week in Middlesex County -- while the new case and the suspected case are on farms in the Chatham-Kent region.
The Ministry of Agriculture says it's working closely with the affected producers, the pork industry, and the Canadian Food Inspection Agency to deal with the outbreak.