Your friend does not have many options if he/she divorces. A person cannot obtain a green card through marriage if he/she is divorced before his/her application for adjustment of status is approved. Even if the divorce is not final, the petitioner has the right to withdraw the immigrant visa he/she filed at any time. You can read more about family-based immigration at http://myattorneyusa.com/family-immigration.
Answered on Feb 25th, 2016 at 3:28 PM