My sister has become an American in America, and now she is applying for our family of three to immigrate to America.

You shouldn't visit relatives, huh? If you are your sister, not your cousin, you should apply for immigration.

If you are applying for immigration and your son is not 2 1 year old, you can go. Sure, now, come on. The age in America is 2 1 year. If you want to immigrate to the United States with your parents, your child must be underage. If your son can't immigrate to the United States, you can get a green card, live in the United States for five years, and then apply for naturalization for your son in China.

According to your immigration situation, you belong to the fourth priority immigration objects A and P4- 1: brothers and sisters of American citizens (regardless of age); B, P4-2: spouses of brothers and sisters; C, P4-3: and their children under 2 1 year;