What are the categories of relative immigrants in the United States

What categories are included in the immigration of relatives? U.S. relatives immigrants *** divided into two categories, one is not subject to the global immigration number of relatives immigrants, that is, immediate relatives: U.S. citizens of the spouse; U.S. citizens of the minor children (under the age of 21); U.S. citizens of the parents. This is categorized as the closest relative, and is processed on a case-by-case basis. The other category is kinship immigration, which is limited by the number of immigrants worldwide, and is divided into four classes in order of preference: First preference: adult children of U.S. citizens (over 21 years old) and their children.

Second priority: 1. Spouses and minor children of permanent residents; 2. Adult unmarried children of permanent residents and their children.

Third Priority: Married children (regardless of age) of U.S. citizens and their children.

Fourth preference: siblings of U.S. citizens who are 21 years of age or older.

U.S. immigrant investors, relatives and professional immigrants all have different targets