I Immediate Relatives: Immigrants who are exempt from the numerical limitations imposed on immigration to the United States.They are spouses and children (under 21 years of age and unmarried and parents of citizens 21 years of age or older).
  Immigrant: Person who comes to the U.S. and wishes to stay permanently. Must apply for permanent resident status.
  Inadmissible: Also referred to as excludable. A person is not eligible to enter the U.S. Alien attempts to enter the U.S. either at a border patrol or other port of entry (airport), and the CBP officer properly refuses entry to the alien. The alien is excluded and must return to their home country or the country from which they traveled. Alien is not entitled to a hearing on the matter.
L Legal Entry: Entering the borders of the United States, being inspected by an U.S. Immigration and Naturalization Service official, and being given permission by such official to enter.
M Migrant: A person who leaves his/her country of origin to seek residence in another country.
N Nonimmigrant: A person who comes to the U.S. with the intent to remain only temporarily. For most classifications, the alien must maintain her/his permanent residence abroad.