Can a person have green cards from two countries at the same time?

A green card is a permanent residence permit for foreign citizens. Holding a green card means that the cardholder has the permanent residence in the issuing country, and at the same time, holding a green card can exempt entry visas for a certain period of time. Having a green card means having the nationality of that country.

dual nationality

It refers to the legal qualification of a person who belongs to a country's nationals or citizens, indicating that a person has a fixed legal connection with a specific country, which is the legal consultant basis for the country to exercise personal jurisdiction and diplomatic protection.

The Nationality Law stipulates the acquisition, loss and change of nationality. There are two main ways to acquire nationality: birth and naturalization. There are two international principles for acquiring nationality by birth: jus sanguinis and jus soli. In a country that adopts the system of birthplace, regardless of the nationality of parents, children acquire nationality when they are born in their own country. In countries that adopt the principle of descent, regardless of the place of birth, the nationality of a child must follow that of both parents or one of them. Naturalization refers to a foreigner or stateless person who obtains the nationality of a country after applying for and being approved in accordance with the laws of that country. There are also people who acquire the nationality of a country through marriage or adoption.

Because different countries have different regulations on nationality, dual nationality or statelessness often occurs under special circumstances. For example, a citizen of a country that adopts the principle of descent and a child born in a country that adopts the principle of birthplace have the nationality of two countries at the same time. On the other hand, citizens of countries that adopt the principle of birthplace and children born in countries that adopt the principle of descent do not have the nationality of any country.

(1) Nationality of birth. Nationality of birth: or adopt the principle of descent, that is, determine a person's nationality by the nationality of his parents at birth; Or adopt the principle of place of birth, that is, determine a person's nationality by the country where he was born; Or adopt the principle of combining bloodline and birthplace to determine their nationality. China adopts the principle of mixed descent, supplemented by place of birth, including three contents: first, both parents or one parent is a citizen of China, and I was born in China and have China nationality; Two, one or both parents are citizens of China, I was born in a foreign country and have China nationality; However, if my parents or one of them is a citizen of China and lives in a foreign country, and I was born with a foreign nationality, I do not have China nationality; Third, parents who are stateless or whose nationality is unknown have settled in China. I was born in China and have China nationality.

(2) Inheritance of nationality. According to Article 7 of China's Nationality Law, foreigners or stateless persons applying for citizenship in China must meet two preconditions: first, the applicant must be willing to abide by the Constitution and laws of China; Second, it must be voluntary. At the same time, the necessary conditions are as follows: ① The applicant is a close relative of China people; ② The applicant has settled in China; ③ There are other justified reasons. If I am under the age of 18, my guardian or other legal representative can handle the application procedures on my behalf. In China, you can apply to the local city and county public security bureau; In foreign countries, you can apply to our diplomatic representative offices or consular offices. The above-mentioned authorities are responsible for accepting applications and examining whether the applicants meet the legal requirements, and then the applications are examined and approved by the Ministry of Public Security of China. With the approval of the Ministry of Public Security and a certificate issued by the relevant public security organ, the applicant has obtained China nationality and lost his foreign nationality at the same time.

(3) refers to the fact or state of an airplane, ship, etc. Belong to a country