If you have an existing passport before 26 October 2005 (date has been put back a year) you won't need a visa. This is the current date that biometric passports need to be held for entry into the USA.

So, if your passport is due for renewal after 26 October 2005, it's best to get it renewed before that date (you can get up to nine months 'credit' if it still has that amount of time to run). This will mean the biometric passport requirement won't apply to you until that passport expires.

Your baby will need her own passport but, because this will have been issued before 26 October 2005 (and the biometric passport requirement won't apply to her), she won't need a visa.