The Spouse or Child of US Permanent Resident Green Card category enables lawful permanent residents of the United States to sponsor their foreign spouses and children to live and work in the US on a permanent basis.
In addition, the unmarried children under 21 years of age of the spouse, and the unmarried children of the US lawful permanent resident and the unmarried children under 21 years of age of the lawful permanent resident’s children may apply for US permanent residence as well.
The Spouse or Child of US Permanent Resident Green Card category can be applied for from either inside or outside the United States. If in the US, the spouse must have made a legal entry to the United States and have maintained legal status. If outside the US, the spouse may not enter the US until the visa is granted