Question did Mahmoound Khalil register for selective services? Rights and Responsibilities of Green Card Holders Obey Laws: Green card holders must obey all federal, state, and local laws. Pay Taxes: They are required to file income tax returns and report income to the IRS and state tax authorities. Selective Service: Male green card holders between the ages of 18 and 25 must register with the Selective Service. Maintain Residency: Green card holders must make the US their permanent residence and avoid extended absences that could lead to the abandonment of their residency. Carry Proof of Status: They are required to have a valid Green Card in their possession at all times. Public Charge: Most immigrants must show they will not become a public charge. Naturalization: Green card holders are eligible to apply for U.S. citizenship after meeting certain requirements, including continuous residence in the United States.