I-129 – Petition for a Nonimmigrant Worker – is a form submitted to the United States Citizenship and Immigration Services used by employers or prospective employers to obtain (or amend the details of) a worker on a nonimmigrant visa status.
I-130 – Petition for Alien Relative – is used to establish the existence of a relationship to certain alien relatives who wish to immigrate to the United States.
I-140 – Immigrant Petition for Alien Workers – is used to petition U.S. Citizenship and Immigration Services (USCIS) to classify an alien beneficiary as eligible for an immigrant visa based on employment.
I-918 – Petition for U Nonimmigrant Status – is used to request temporary immigration benefits if you are a victim of certain qualifying criminal activity. (U Visa)
VAWA – Under the federal Violence Against Women Act (VAWA), you may be eligible to become a lawful permanent resident (get a Green Card) if you are the victim of battery or extreme cruelty committed by a U.S. citizen spouse or former spouse, U.S. citizen parent, U.S. citizen son or daughter, lawful permanent resident (LPR) spouse or former spouse, or an LPR parent.
Asylum – You are eligible for asylum if you have suffered persecution or fear of suffering persecution due to your race, religion, nationality, membership in a particular social group or political opinion. (I-589 – Application for Asylum and for Withholding of Removal)
AOS – I-485 – Application to Register Permanent Residence or Adjust Status – AOS is a procedure that allows an individual to become a lawful permanent resident of the US without having to go aboard & apply for an immigrant Visa.