If your I-140 petition was approved, your spouse and unmarried children who are under 21 years old can apply for admission to the United States. Consult a knowledgeable immigration lawyer to determine the status your family members can use to apply for admission to the country. The status will depend on your respective employment-based preference category. At Spar & Bernstein, we have helped thousands of family members reunite with relatives who work in the US.