Attorney at Law

What is an Alien?

An alien is a foreign-born individual in the U.S. who is not an American citizen. A legal alien has an immigrant or nonimmigrant visa. Immigrant visas are issued to foreign-born individuals who intend to live permanently in the U.S.; nonimmigrant visas are for foreign-born individuals wishing to enter the U.S. on a temporary basis. 

An illegal alien or undocumented immigrant does not have a valid visa or other immigration documentation either because he entered the U.S. illegally, stayed longer than his temporary visa permitted, or otherwise violated the terms under which he was admitted.

Key Takeaways

  • An alien is a person born outside the U.S. who is not an American citizen.
  • An illegal alien is in the U.S. without any legal immigration status and is therefore vulnerable to being deported.
  • A legal alien possesses a valid visa that enables him to remain in the U.S temporarily (nonimmigrant visa) or ultimately to stay in the country permanently (immigrant visa).  
  • To acquire an immigrant visa, most aliens are sponsored by a family member or an employer in the U.S., or they access humanitarian protection, such as refugee or asylum status. Once approved, the next steps are to apply for a green card/permanent residence and later for citizenship. 

Understanding What an Alien is

An undocumented alien/immigrant is a foreign-born person who does not have a legal right to be in America. Some undocumented aliens sneak into the U.S. without being legally admitted and inspected by U.S. immigration authorities; many others originally come to the country legally, as tourists or on other nonimmigrant (temporary) visas such as to conduct business, obtain medical treatment, or attend school—then they fail to leave when their visas expire or don’t adhere to the rules of their visa: people are restricted to the activity or reason for which they were allowed entry. For example, an individual with a student visa must continue to be enrolled in school throughout the period of the visa. 

Regardless of how long an undocumented alien/immigrant has been in the U.S., most do not have a route to achieving legal status; even those who pay taxes, work hard, and contribute to their communities.

More About Aliens

When undocumented aliens/immigrants have qualifying relatives or employers who can provide a pathway to a visa, many are still unable to take advantage of that process for years due to extremely long backlogs. In addition to that challenge, even if there is a visa available, numerous undocumented immigrants who entered the U.S. illegally are generally barred from obtaining legal status while they’re inside the U.S; they cannot “adjust status” and get a green card without first leaving the country.

Leaving the U.S. to obtain a visa can have significant negative consequences. A person who has been out of status for more than 180 days, but less than one year, is barred from being 

re-admitted or re-entering the U.S. for three years; while someone who has been out of status for more than one year is barred for 10 years. Although waivers to these bars exist, they are difficult to obtain. 

Bottom Line

In terms of humanitarian protection—most people fleeing danger cannot access that protection. Each year, the U.S. sets a numerical limit on how many refugees will be admitted for humanitarian reasons. And to be admitted as refugees, individuals must be able to demonstrate a “well-founded fear of persecution based on race, religion, membership in a particular social group, political opinion, or national origin.” Asylum seekers are people already in the U.S. who fear returning to their home countries—they must prove they meet the definition of a refugee.

Ask a Lawyer

Ask your own question and get advice from expert attorneys
Ask Question

Featured Immigration Law Lawyers

Paz Law

5 years in practice
Auto Accidents, Immigration Law, Personal Injury
View Profile

Crawford Immigration Law

5 years in practice
Immigration Law
View Profile

Bueno Law Office

7 years in practice
Citizenship, Immigration Law, Marriage & Fiancee Visas
View Profile

Law Office of Scott Herlihy

27 years in practice
Alimony, At-Fault Divorce, Child Custody, Child Support, Divorce & Family Law
View Profile

RYTELAW-Payman Bafekr, Esq.

1 years in practice
Auto Accidents, Bad Faith Insurance, Bicycle Accidents, Contract Law, Insurance Law
View Profile

Issa Law, LLC

13 years in practice
Auto Accidents, Bicycle Accidents, Criminal Defense, DUI Law, Motorcycle Accidents
View Profile


Are you looking for an attorney? Do you have questions about a legal case you are facing? Contact us now and we will put you in touch with a lawyer for free.

Related Posts

Public Charge
Boruch Burnham, Esq.November 16, 2023
Attorney At Law is changing how clients connect with lawyers. By providing an innovative platform to lawyers who want to expand their practice’s reach, AAL is bringing law practices into the future.
6142 Innovation Way
Carlsbad, California 92009
Some of the content of this website may be considered attorney advertising under the rules of certain jurisdictions. The information on this website is for general information purposes only. Nothing on this site should be taken as legal advice for any individual case or situation. This information is not intended to create, and receipt or viewing does not constitute an attorney-client relationship.
crossmenuchevron-upchevron-down linkedin facebook pinterest youtube rss twitter instagram facebook-blank rss-blank linkedin-blank pinterest youtube twitter instagram