A non-citizen of the United States, including lawful permanent residents (green card holders), can be deported (under current law deportation is called “removal”) for violating the terms of his visa, for committing certain crimes, or for certain types of conduct contrary to the immigration laws, like alien smuggling or using false documents. A person trying to enter the United States can be arrested, denied admission and excluded from the United States as well. However, just because the government claims that a foreigner is excludable or deportable does not mean that he or she is. The foreigner can fight his case in Immigration Court and it can sometimes be terminated because the government’s claim of deportability or excludability cannot be proved. Being a citizen protects a person from being deported or excluded. Sometimes a person is a citizen without being aware of it. If an Immigration Judge is presented evidence that shows that the person is a citizen, removal proceedings will be terminated.