If USCIS has issued you a U visa as a victim of a crime you may file for your green card.
If USCIS has issued you a T visa as a human trafficking victim you may file for your green card.
You can read our entire series, "Who Gets A Green Card?" below:
Who Gets A Green Card? : Through a Job or Job Offer
Who Gets a Green Card?: Special Immigrants
Who Gets A Green Card? : People Granted Political Asylum and Refugees
Who Gets a Green Card?: Trafficking and Crime Victims
Who Gets A Green Card?: Victims of Abuse
Who Gets A Green Card?: Those Residing Here Since 1972
Who Gets A Green Card?: Various Other Categories