If you are an American Citizen over 21 years old, you can summit an immigration petition for your wife, sons, parents and brothers.

If you are a Permanent Resident of the United States of America, you can summit an immigration petition for your wife and sons.

If you have had the permanent resident card of the U. S. A. for 5 years, you could get the American citizenship.

If you have had the permanent resident card of the U. S. A. for 3 years, and you have been married with an American citizen for 3 years, you could get the American citizenship.

I have been undocumented in the United States of America, can I apply for a U. S. Visa?
No, you have to request a waiver in the USCIS (United States Citizenship and Immigration Service) in the U. S. Embassy or Consulate.