Including Immigrations and agriculture inspections ? Please add a link to this story -thank you.There are 15 or so pre-clearence points now in service, mostly in Canada -one on Aruba. Processing on Aruba can be up to 3 hours but not necessarily anywhere that long depending upon day and time. Weekends are longest due to timeshare departures, weekdays much better.Best is arrival in US on nonstop flight as you arrive domestically.