Lots of cheering for urinary tract infections in this thread right now.
The idea that circumcision in the U.S. has "nothing to do with religion" is a deliberate, self-conscious lie. It only became public policy in the early 20th century because of religion. That most circumcisions performed now are done for secular reasons no more mitigates its origins in Abrahamism than does the fact that having Sunday off has become secularized remove it from its origin in Christianity.
This is like arguing that since Christmas is descended from pagan practices it's fundamentally a pagan celebration. That doesn't make sense. Yes, circumcision and taking Sundays off both originate from religion, and for some people both practices are justified religiously, but for the overwhelming majority of people in this country neither practice has much to do with religion at all.