Thanks for the help! I had old information and spoke out of turn.
Actually, to clarify my last post, I was saying that they don't allow much in the way of beef imports any more. There's been an upturn in domestic beef because of fears about American beef being infected with mad cow disease. I can't find the article because I can't access their site at the moment, but I do believe that I remember reading this on www.japantoday.com a while back.