Educate yourself and fight for your son's right to his whole penis.
America is the only country in the developed world that routinely cuts its baby boys for no medical or religious reason. No major medical organization in the world recommends routine infant circumcision. Other countries are baffled by Americans' obsession with amputating healthy skin from infants. As for it being cleaner, reducing infections, etc, America has some of the highest STD and UTI rates in the developed world while also having the highest circumcision rate. The argument of he'll have to have it done later is invalidated by European data, where less than 1% of intact men later need to be circumcised.
Complication rates are high, ranging from adhesions, phimosis, infections to hemorrhage and death. It is horribly painful, even when performed with anesthetic, and studies have shown that circumcised infants develop neurologically differently than their intact peers, with higher cortisol levels and lower pain tolerance to other painful stimuli. Circumcision can also cause breastfeeding problems.
As has been mentioned, once you cut him, he cannot be uncut.