You conflate American, Jewish and Muslim tradition. (The reason why it was promoted in America by the way, is because it supposedly made masturbation more difficult. A Puritan inheritance.) But all that said, male circumcision does not seem to be very harmful. Weighing the medical side against what it would do to tolerance in society if it were banned, I would definitely oppose a ban.
U.S. envoy to UN visits Cuba's UN Mission, a first in decades (AP)
from the article: Europe's shudder at circumcision