I'm sure those "statistics" come out of California, which really isn't part of the US anyway. Native born white males are in the minority in California. The male immigrant population, which is huge, is essentially impoverished Mexicans/Central Americans who probably never heard of a circumcision, much less practiced it, and Asians, mostly Chinese, of multiple socio-economic strata, who also never routinely practiced circumcision. Here in the Southeastern States, you would be hard pressed to find a foreskin on any native born citizen, black, white, Asian, or Native American. Oh, they exist to be sure, it's just they are a surprise finding, when you actually do stumble across one.