The beef wars have only just begun. Reuters reports that Mexico is extremely upset over new U.S. meat labeling rules. In fact, Mexico is so upset that it is reportedly considering imposing retaliatory trade measures on the U.S.

According to The Associated Press, the new federal labeling rules went into effect on Tuesday. The new rules mandate that labels on meat indicate where the animal was born, raised and slaughtered. Previously, the USDA meat labeling rules only mandated that countries of origin be noted on packages. Now, a label will say something like, “Born in Mexico, raised and slaughtered in the U.S.”

According to the USDA, Country of Origin Labeling is a labeling requirement that mandates retailers give their customers information about the source of certain foods. The labeling law went into effect in 2005 for fish and shellfish. Meat and other products were covered under this law starting on March 16, 2009.

Not only is Mexico upset at the new meat labeling rules, but The AP reports that Canada is unhappy with the U.S. over the new meat labeling regulations. The AP notes that the the World Trade Organization said in 2012 that the 2009 U.S. meat labeling rules disadvantaged animals from Canada and Mexico. Canada and Mexico believe that the new U.S. meat labeling rules don’t comply with the WTO requirements.

According to The Wall Street Journal, Canada is also considering retaliatory trade measures on the U.S. An insider told The Wall Street Journal that Canada will likely inform the WTO in late summer that the U.S. has not conformed to the trade organization’s ruling, and request authorization to level retaliatory trade measures on the U.S.

Should Mexico and Canada be upset or are the new rules going to work in their favor? Should meat contain a label that indicates its country of origin, where it was raised and where it was slaughtered or will this information discriminate against some countries? Sound off in the comments section.