On all my recent arrivals to LAX terminal 2 there has been normal delays at immigration, but long waits for customs, as there seems to be more flights arriving from Mexico into terminal 2 now. All the mexico pax get sent for additional customs inspections while all the NZ pax I have seen get to leave with no additional screening.
That said, with no checked luggage, was outside in 15 minutes from the door opening on the plane a couple of weeks ago.