On Monday Japanese officials confirmed another positive case of bovine spongiform encephalopathy (BSE) in it's cattle herd.
According to reports, the brain-wasting disease struck a 5-year old dairy cow. All but two of the total 12 cases in Japan have been from cows over five years of age.
The United States depends on Japan's consumers buying appetite for U.S. beef. Since the border was closed after the December 2003 U.S. BSE finding, negotiators have been working to reopen the borders.
Up until this point, Japan has always required that the U.S. test all of its cattle for BSE, the same as Japan does. However, last week Japan's Food Safety Commission announced that the country would allow meat under 20 months of age to be allowed.