Originally Posted by dublinaviator
What are you not getting? Using CBP in Dublin saves you TIME, and to any business passenger, time is money, and to any leisure passenger its about convenience. Like I said theres times where you can be standing in a queue for an hour in JFK, saving 45mins by using CBP in Dublin can only be a plus.
Immigration preclearance saves time. Customs preclearance saves no time (it will actually add at least an hour to the min connection time in DUB) unless the passenger is connecting to another flight in the US. I can't imagine too many passengers connecting in DUB and again in the US.