Thanks a lot for ur reply. Due to my family situation I'm forced to go to India for delivery..Is is easy to get a Transportation letter? or do we need to fill any kind of forms?
However, occasionally some people have problems with the airline, so they go to the consulate to get a letter to explain the baby's eligibility to travel which isn't an actual Transportation Letter (which costs $165).
Before leaving the US, I would advise applying for a reentry permit in case any medical issues of the mother or baby result in being unable to return to the US within a year. And remember it must be the accompanying parent's first trip to the US since birth when the baby is brought into the US and the baby must be under 2 years old.