How do I get a
family Based Green Card? (Mother, Father, Children, Spouse, Brother and/or Sister)
As a US citizen, you may petition for permanent residency for your immediate relatives. Your immediate relatives include your spouse, your parents (if you are over 21 years old), and your children (if your children are under age 21 and unmarried). Green cards through immediate relatives of US citizens are unlimited, so your immediate relative will not have to wait for an immigrant visa to become available.
US citizens may also petition for green cards for other relatives that are not considered immediate relatives. These relatives fall under the family-based preference visa categories. The number of visas for these categories is limited by Congress, so these family members may have to wait for a visa to become available in their category. read more here
http://www.immigrationdirect.com/blog/how-to/how-do-i-get-my-family-a-green-card/______________________________________
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