Everything in my freezer is labeled with USDA and the local supermarket's labels. On 30 Sept the "Country of Origin Labeling" (COOL) rules came into effect in the U.S.
This ruling requires the product to be labeled according to country that product originated in. Apparently the market that you use must get it's meat from all three nations. I get mine from Kroger, WalMart, County Market and sometimes from a local family owned butcher shop. (I'm a price shopper.)
The Kroger here does have some meats that are marked from other nations such as a 10lb pkg of a certain type of ribs that comes from the EU. If your market gets their meat from one of the big meat processing plants that gets it meat from more than one nation then it would have to be labeled with all nations of source.
For more on this:
http://www.thepoultrysite.com/articles/1194/country-of-origin-whats-in-a-cool-label