There are 4 million World of War Craft players, there are 2 million farmers (link) and 3 million Agricultural Workers in the US. Of those 3 million it is estimated that about ½ a million are immigrants working without proper authorization. On top of that appears that farmers are increasingly having a difficult time bringing in workers is through the H2A guest worker program.
The immigration debate is now coming to places like Zanesville, Ohio and Omaha, Nebraska. However, as the number of farmers shrinks will they have the ability to shape the US's immigration policy.