How is being a lawful permanent resident different than being a United States Citizen?
As an LPR, you cannot vote in state or federal elections, and there are certain categories of employment that are only available to USCs. In addition, USCs can file petitions for more categories of family members – married sons and daughters, parents, and siblings – and in certain instances, the family members of USCs can gain residency faster than family members of LPRs. Also, if you naturalize, your LPR children under age 18 residing with you will automatically become USCs. They can then apply for a certificate of citizenship or a U.S. passport.