Since the 911 terrorist attacks, American began to tighten immigration policy, many a person holding a green card for many years have sworn in as USA citizens. However, whether through domestication into USA citizens or in America born automatically become citizens, should understand America legal requirements and restrictions on dual citizenship.

   A lot of people for the America dual nationality laws have considerable confusion or misunderstanding. The family international maternal and child to introduce the related legal problems of dual nationality, is the so-called dual nationality refers to a person at the same time, belonging to two different countries citizens, and each country also belongs to the nationality law of their own.

   Basically, each person's "nationality" is the standard by the nationality law of the country. So if a person can have two or more nationalities. It is also hold different nationality status in the country under the jurisdiction and specification.

   If a person with hold American nationality nationality citizenship, USA laws and regulations on dual citizenship can only affect the individual's "USA" citizenship, and can not affect the people of foreign nationality identity. The relative standard, the foreign nationality on dual citizenship is only for the citizens of this country have an impact, but will not affect the person's America citizenship. A person can be for each country for the laws of different and automatic acquisition of the nationality.

   For example, in American born child can automatically become USA citizen, but because their parents are holders of foreign nationality may be acquired foreign nationality and identity.

   A citizen may American by marriage with foreigners to become citizens of other countries: a foreigner may also through planning and made USA citizenship without affecting their country of birth nationality.

   Basically, USA law does not mandate a with dual nationality who choose a nationality in two nationality. At the same time, if a person who made his nationality in "automatic" case will not affect the America citizenship. However, if a person "voluntary" "select" apply for other nationality identity, and intend to give up American citizenship, will lose its American citizenship.