Can I claim my step children living abroad?

Good afternoon, I was wondering if I could claim my step children living with my wife in the philippines? We are filing jointly (i will need to apply for ITIN for my wife) and it says that you can claim children as long as they have lived with you for 6 months of the year. Since we are filing jointly, would it still apply since they are living with my wife? Any help would be appreciated. Thank you very much.