How long will administrative processing take ?

Administrative processing from Iran can take several more months, if not longer.

How many months can minors with conditional green cards be out of the USA?

Anything more than 6 months is not advisable but to be safe, a trip should not be more than 60-90 days.

How long will the petition for alien relative (spouse-Form I-130) takes?

Refer to the USCIS case processing for I130 from the service center handling your case.

It takes anywhere from 2-4 months until your case is transferred to the NVC.

Why is my N-400 in line for an interview for more than 6 months ?

This is not unusual but if concerned, contact USCIS customer service or schedule an Infopass appointment.

I currently am married to US citizen and under the DACA program which expires next yr. How soon can remarry

Even if you were to marry again, you are not adjustment eligible due to your manner of entry. Consult with an attorney for further guidance.

No this does not indicate something is wrong with your application. Refer to USCIS case processing for specific timings.

When applying for US citizenship, do I need to attach physical documents pertaining to criminal history to paper application?

Yes you must provide all certified court dispositions for all arrests and convictions. Consult with an attorney to determine the impact on your...

It can take a few months before your interview date is actually scheduled so I would remain patient in the meantime.

Reapplying for residency after abandonment is certainly possible as long as you meet the basic eligibility requirements for the type of residency...