My wife is a Singaporean with an American green card, and I come from China. We have been married for two and a half years. Wife said to wait for her American daughter next year 18.

When your wife applies for American citizenship, she has to go through a naturalization interview, including a written test and an oral test. There are more than 100 questions. Your wife got a green card for five years, so she can take the American citizenship exam. Your wife's American citizenship test has nothing to do with her daughter's age.

If your wife has left the United States for more than 6 months, her green card may be invalid. When she enters the United States Customs, she may be refused entry unless she has a paper to return to the United States, which is valid for 2 years.

The US green card application for spouses and children under 18 is not scheduled now, just like the application for spouses and children by American citizens. The application process takes about six months to one year.

When your wife applies to the Immigration Bureau for your immigration, she needs to submit at least three years' tax return records, with the tax rate higher than 130% of the lowest income, and submit economic guarantee. After receiving the application form, the Immigration Bureau will get a green card number and immigration file when it passes. You can check the progress through the number. After you get a visa, your fingerprints will be taken when you enter the US Customs. At home in the United States, you will receive a green card from the immigration office within 1 month, usually two or three weeks. Before getting a green card, you can freely enter and leave the United States with the seal of entering the US Customs, valid for 1 year. After getting a green card, you can apply for American citizenship five years later. When your wife applies for you, she can apply for your children under 0/8 to immigrate with you. If you have been married for less than 2 years, your visa is CR 1 and your children are CR2. If you have been married for more than 2 years, your visa is IR 1, and your children are IR2, your children can get a US green card. You can apply for American citizenship after getting a green card for three years.