Where do you go through passport control?
con-TROL-lo — double 'l', stress on second syllable. Passaporto: pas-sa-POR-to.
Ask airport staff after landing on an international flight when you need to find the passport control (immigration) area.
Si fa (one does / you do) is the impersonal reflexive construction, equivalent to 'where does one do'. Il controllo del passaporto (passport control) is the standard term — controlo by itself can also mean customs check.
C'è la fila per i non-europei?
Is there a queue for non-Europeans?
EU citizens and non-EU citizens use different lanes at Italian border control
Posso usare il corridoio UE?
Can I use the EU lane?
Corridoio UE — the EU/EEA/Swiss fast track lane at border control
Dove si trova l'ufficio immigrazione?
Where is the immigration office?
For complex visa situations requiring a desk rather than a booth
Italian border police (Polizia di Frontiera) staff are professional and efficient — having your passport open to the photo page before reaching the desk speeds things up considerably.