A record of having been involved in terrorism, presented a threat to U.S. security, or been affiliated with other anti-humanitarian beliefs or groups can destroy a person’s eligibility for a U.S. visa or green card (lawful permanent residence).
No matter what the basis of your potential eligibility for entry or residence – whether you have signed up for a tour, received a job offer from a U.S. employer, married a U.S. citizen, or won the diversity visa lottery – it will be worthless if you are “inadmissible” according to U.S. immigration law. This article summarizes the grounds of inadmissibility related to terrorism and other security issues.
(A separate but related category of inadmissibility has to do with crimes, as described in “Crimes That Make U.S. Visa or Green Card Applicants Inadmissible.”)
A full list of the grounds of inadmissibility can be viewed at Section 212(a) of the Immigration and Nationality Act (I.N.A.). They also include issues such as communicable diseases, past immigration violations, and the likelihood of relying on need-based government assistance.
Inadmissibility Based on Association With Espionage or Sabotage
A noncitizen will be found inadmissible to the U.S. if it appears that the reason for attempting to enter is to engage in legal violations relating to espionage, sabotage, prohibited export of goods, technology, or sensitive information, any other unlawful activity, or to oppose, control, or overthrow the U.S. government by force, violence, or other unlawful means.
Inadmissibility Based on Association With Terrorism
A noncitizen will be found inadmissible to the U.S. if he or she has virtually any sort of association with terrorism or a group that the U.S. considers terrorist, including if the person:
- has engaged in or appear likely to engage in a terrorist activity after U.S. entry, according to the knowledge or reasonable belief of the U.S. government
- has incited terrorist activity meant to cause death or serious bodily harm
- represents a terrorist organization or a political, social, or other group that endorses or espouses terrorism
- is a member of a terrorist organization (unless the person can prove that he or she didn’t know and should not have reasonably known that it was a terrorist organization)
- endorses or espouses terrorist activity or persuades other people to do so
- supports a terrorist organization
- has received military-type training from or on behalf of any terrorist organization, or is the spouse or child of someone who is inadmissible under this portion of the law, if the activity causing the main applicant to be inadmissible took place within the past five years. There’s an exception for a spouse or child who did not know or should not reasonably have known of the terrorist activity or whom the U.S. government reasonably believes has renounced terrorist activity.
Check the statute for full definitions of terrorist activity, terrorist organization, and so on. In brief, terrorist activity is against the law where committed or would be unlawful in the U.S. and involves hijacking or sabotage; seizing, detaining, or threatening to kill or injure people in order to compel action by the governmental or some person; violent attacks upon an internationally protected persons; assassination; use of biological or chemical agents, nuclear weapons, or explosives, and so on.
Inadmissibility for Foreign Policy Reasons
If a noncitizen’s entry to the U.S. would, in the opinion of the Secretary of State, have potentially serious adverse foreign policy consequences for the U.S., that person will be found inadmissible. Exceptions may be made for foreign government officials or candidates for foreign office or anyone whose beliefs, statements, or associations would be lawful within the United States.
Inadmissibility Based on Membership in a Totalitarian Party
Noncitizens who are or have been members of or affiliated with the Communist or any other totalitarian party (including subdivisions or affiliated organizations), whether domestic or foreign, are inadmissible. Exceptions may be made if the person became a member involuntarily or force of law, or when below the age of 16, or in order to get a job, food rations, or other life essentials. Another exception applies if the applicant for a visa or immigration benefit can prove that he or she is not a threat to U.S. security and the membership or affiliation ended at least two years ago, or five years ago if the party in question controlled the government.
Close family members who pose no threat may also qualify for exceptions in the discretion of the U.S. Attorney General, for humanitarian purposes, to assure family unity, or when it is otherwise in the U.S. public interest.
Inadmissibility Based on Participation in Nazi Persecution
Noncitizens who, between March 23, 1933, and May 8, 1945, ordered, incited, assisted, or otherwise participated in persecution based on race, religion, national origin, or political opinion under the direction of or in association with the Nazi German government (including occupied areas and allies), are inadmissible.
Inadmissibility Based on Commission of Torture or Extrajudicial Killings
Noncitizens who, outside the U.S., have committed, ordered, incited, assisted, or otherwise participated in the commission of torture or extrajudicial killing are inadmissible.
Inadmissibility Based on Recruitment or Use of Child Soldiers
Noncitizens who have recruited or used child soldiers are inadmissible.
For more detailed information on these grounds of inadmissibility or applicable exceptions, consult an experienced immigration attorney.


