AOS is an abbreviation for ‘Adjustment of Status’; it occurs when the I–485 form is completed by the primary applicant with the USCIS. Also, immigrants currently living in the US on a valid visa and are looking to obtain legal permanent residency on conditional basis, based on accepted or pending immigrant petitions, can use this process as well. Using Form I-485, EB-5 investors living in the US and have an approved Form I-526 can put in an application for Adjustment of Status. Further, the principal alien’s approved I-526 enables their immediate family members, i.e. spouses and children aged 21 and below who are unmarried, to apply simultaneously.