Is the Interview for Form I-485 Application (Adjustment of Status) Required?

Question:

Are adjustment of status interviews always required for Form I-485 application?

Answer:

In many Form I-485 application cases, usually where the alien immigrant is applying for a Green Card based on employment in the United States, USCIS will decide that an interview is not necessary. The alien applicant will receive its decision on Form I-485 application by mail in writing, without an interview. Or USCIS may request  additional documents from the Form I-485 applicant, and then make a decision.

However, if the alien applicant are applying for Green Card of Form I-485 application based on marriage, the applicant mat be called in for an adjustment of status interview. That’s because USCIS is very concerned about people committing marriage fraud, and wants to have a  chance to test the spouse on knowledge of everyday matters that will prove that you are sharing a life.

Also for Form I-485 application based on marriage, if USCIS suspects marriage fraud in a Form I-485 application case, it may separate you and your spouse in separate rooms, for what is called a “marriage fraud interview.” That means USCIS will ask each of you the same questions, and then compare your answers. If the answers don’t match up well, you can expect your Green Card to be denied.

http://www.greencardapply.com/question/question15/I485_Interview_031615.htm
http://www.greencardapply.com/i485.htm