Immigration act alien passport refugee immigration offender definitions The terms used in this Act shall be defined as follows 1. The term "national" means a national of the Republic of Korea; 2. The term "alien" means any person who is not a national of the Republic of Korea; 3. The term "refugee" means a refugee defined in subparagraph 1 of Article 2 of the Refugee Act; 4. The term "passport" ..