A permanent legal resident in the United States has more rights and protections than someone living in the United States or visiting with a visa. Those who have a Green Card or Permanent Resident Card can live and work in the United States with all the protections of the law. In fact, they can even potentially sponsor their spouse or unmarried children under the age of 21 for entry into the United States.
However, lawful permanent residents do not have all of the full rights that a citizen does. They can’t vote. They can’t run for office, and, in some cases, could still find themselves potentially forced to leave the United States.
Securing full citizenship is an ideal solution for those who hope that they and their family will remain in the United States indefinitely, and a Green Card is often a step on the path to citizenship.