The INA sets limits on the number of people who will be permitted to immigrate to the United States each year using certain types of visas, while other visas are unlimited. Family immigration visas for the immediate relatives of U.S. citizens are available on an unlimited basis, while there are annual quotas set for the relatives of lawful permanent residents and extended family of citizens, with a maximum quota of 480,000. The number of employment immigration visas is limited to 140,000 per year.