noun
immigration check; immigration inspection
The process of passport and visa examination upon entering a country.
成田空港で入国審査を受けるのに一時間かかった。
It took an hour to go through immigration at Narita Airport.
出国審査 is the exit inspection when leaving a country, while 入国審査 is the entry inspection upon arrival.
Compound of 入国 (entry into a country) and 審査 (inspection, examination).