You would need to first become a permanent resident of the United States. You may be eligible to apply for a green card (permanent residence) through your family, a job offer or employment, refugee or asylum status, or a number of other special provisions. In some cases, you may even be able to self petition or have a record created for permanent residence on your behalf. The steps to becoming a Green Card holder (permanent resident) vary by category and depend on whether you currently live inside or outside the United States. The main categories are:
Green Card Through Family
Green Card Through a Job
Green Card Through Refugee or Asylee Status
Good luck!