Original sentence: Typically, the glans is completely or partially covered by the foreskin, except in men who have been circumcised, though the foreskin can generally be retracted over and past the glans
Edited sentence: In countries such as the United States it is typical for the penis to be circumcised, so the glans  is not covered by the foreskin, but the foreskin covers the glans in men who have not been circumcised yet