The information comes from Siliconera, which cites an unnamed source for the information. According to the report, Dead Rising 3 will have an "undercurrent of themes about illegal immigration," One character in the game reportedly leads an underground group of infected people who have not been registered with the government, effectively making them "illegals." Rick (rumored concept art, left) will also meet those sympathetic to the plight of the infected, while other characters--like a crazy motorcycle gang member who rides a bike with a steam roller attached to the front--aren't as concerned with the infected's ordeal. Shacknews has questioned Capcom as to the accuracy of this report, but have not heard back at the time of publishing. [Image above from Dead Rising 2: Off the Record]
Dead Rising 3's 'Rick'