I am flying Cathay Pacific Airways from Hong Kong via JFK to Orlando. It is one reservation through Cathay Pacific. We will be flying Cathay Pacific from HK to JFK, however, the connecting flight from JFK to Orlando will be American Airline. I understand I will need to go through immigration check point. Since there is a connecting flight in the same reservation, do I have to claim my baggage? And if I do, how can I check back in? Thanks in advance.