All aliens in the United States must report a change of address to USCIS within 10 days (except A and G visa holders and visa waiver visitors) of moving.

Form I-9 is used to verify that a person is allowed to work in the U.S. All employers must complete it for every new employee, citizens and non-citizens.

Form I-130 is used by a U.S. citizen or green card holder to ask the U.S. government to let a close family member come live in the U.S. permanently.

Form I-131 is used to request a travel document so non-U.S. citizens can leave and re-enter the U.S. without losing their immigration status.

Form I-131A is used by a green card holder (lawful permanent resident) who is outside the U.S. and needs permission to return after Losing their Green Card or Having a Green Card or Re-entry Permit that expired after 1 year of travel.

People inside the U.S. use Form I-485 to apply for a green card (lawful permanent residence) without leaving the country.

Form I-730, Refugee/Asylee Relative Petition, allows a refugee or asylee in the U.S. to bring certain family members to join them.

Form I-751 is used by conditional green card holders (married to a U.S. citizen) to remove the 2-year condition and get a 10-year permanent green card.

Form I-765 (Application for Employment Authorization) is used to apply for a work permit (Employment Authorization Document or EAD) in the U.S.

Form I-907 is used to request premium processing, which means USCIS will process your petition faster—within 15 to 45 days, depending on the form type.

Form I-912 (Request for Fee Waiver) is used to ask USCIS to waive the filing fee for certain immigration forms if you can’t afford to pay.

Form N-400 is the application used by permanent residents (green card holders) to apply for U.S. citizenship through naturalization.

Form I-864, Affidavit of Support, is a crucial document used in family-based and some employment-based U.S. immigration cases.