How to apply for my sister, husband and nephew to immigrate to the United States? Please, thank you.

In your situation, you can't rely on relatives to immigrate. The migration of relatives includes spouse (unconditional), children and parents (conditional), and brothers and sisters are also conditional. If you are a skilled immigrant, your brother can get a maximum of 5 points (full score 10, if you are not satisfied, you can get a maximum of 5 points) in this relationship under the conditions of immigration adaptation. As relatives of brothers and sisters, they must be unaccompanied, 18 or less. The conditions for relative immigration are as follows: permanent residents or citizens of Canada can apply for family reunion immigration if they have the following kinship: the spouse of the guarantor; Unmarried children (including adopted children) under the age of 22 between the application and visa of the guarantor; Or unmarried full-time students over the age of 22 (life depends entirely on their parents); Or children over the age of 22 with mental or physical defects; Parents of the guarantor; Grandparents of the guarantor; Guarantor 65438+ brothers and sisters, nephews and nieces, grandchildren, nephews and nieces, etc. Parents under the age of 08 are both dead; Children under the age of 22 adopted by the guarantor.