How long does the green card require to stay in the United States every year?

At least six months. American green card holders need to live in the United States for at least six months every year to meet the requirement of maintaining permanent resident status, which is one of the conditions stipulated in the US immigration law. If this condition is not met, it may be regarded as giving up permanent resident status. Conditions for applying for a green card in the United States: applicants must be at least 2 1 year old; American EB-5 investment immigrants do not need any background of education, language, business or work experience for applicants; The applicant has no bad record, and the applicant needs to provide a certificate of no violation issued by his country; The applicant needs to invest 500,000 US dollars, and the investment period should be five years. The American green card is a document that gives foreigners the legal right to live and work, and the holder can work and live freely in the United States. The green card is not permanent, and the holder needs to meet certain conditions to maintain his identity.