for our last two trips with the kiosks in place, when the immigration director staff member looked at our forms she said go to the line, I inquired as to why we could not use the kiosks and was advised it was because we are on Delta flight [both times]. Not sure if Delta does not provide the manifest electronically while we are in flight or what but no one on Delta was allowed to use this either time; lets see what Feb trip has in store. The line however did move along as a good % fo folks are using kiosks. Perhaps Delta does not supply something or is not high on MBJ's list for whatever reason. I also know that on departure, Delta is queued to the longer line vs the short line as well.