It is not medically necessary at this time.
Your DH should be aware that the foreskin is firmly attached to the penis at this time. (Normally it retracts at around preschool age, occasionally not until puberty.) To circumcise a baby they have to literally tear the foreskin off the penis. Ask him if he thinks this would be acceptable.
THIS.
It's amazing how many medical professionals either don't understand this simple fact or have ulterior motives. They wouldn't dream of suggesting that your baby daughter urgently needs implants because she has no breasts or hormones because she isn't menstruating - or expressing alarm at babies of either sex because they aren't very tall, or urgently referring them for speech therapy as they aren't talking.
There may be medical need for intervention, such as in cases of hypospadias or if the opening of the penis hasn't formed for some reason, but these are very much the minority of cases where it's claimed that surgery is required.
As for saying that it's cleaner, this is one of several 'reasons' commonly put forward by proponents of FGM. Imagine the gunk that could collect beneath your eyelids if you didn't automatically remove those at birth....
Bodies, like many things in life, get dirty. The solution is to regularly clean them. Maybe we in the West should get rid of toilets and just squat over a hole in the ground - much simpler than having to remember to clean them, eh?