US CBP has an immigration and customs pre-clearance center at Abu Dhabi airport. I am traveling to US (LAX) via Abu Dhabi, on L1B visa.
Would US immigration officers at Abu Dhabi collect one copy of I129S? Or, would it be collected at US (say LAX)?
Would US immigration officers at Abu Dhabi collect one copy of I129S? Or, would it be collected at US (say LAX)?