It can be done either way but Immigration prefera online. If you mail, i would use separate envelopes to avoid their confusion. You dont need to...

Can parent of 18 year old US citizen apply for adjustment of status?

He cant petition for hos parents until he is 21.

How long after the biometric you get the work permit/travel parole?

It could take upwards of 7 months from date of filing. If part of an I-485 application, alot of times they issue a combo card for work and travel.

Will I have issues leaving or coming back into the US with mis-matched names on Permanent Resident Card and Salvadorean Passpor?

TSA gave you the rigjt answer. Since they are the ones enforcing the law and told you what to do I would follow it. But of you are looking for...

When does a LPR become deportable after charged with a crime?

The I-751 remaval pf conditions will take 12-18 months. Nased on your description you are not deportable as you werent convicted of a mosdemeanor...

It’s been three weeks since I had my marriage based interview I haven’t heard from Uscis how long does it take ?

Generally within 120 days. Infopass appt can be made to go and ask information officer for status.

Is it true that a lawyer can expertise the interview scheduling process?

Make it faster possibly by ensuring forms are filled out correctly and all needed evidence is aubmitted with application.

How to apply greencard for spouse?

There is nothing to prevent you from getting married. If you get married you could file for spouse as a green card and upgrade the case when you...

Hi , I would like to know how much time passes from the letter of the interview to the interview thank you

Start studying now. There is usually about a month, but it could be more and it could be less.

My n-400 application was submitted for supervisor review . I did interview and pass no decision yet ?

Were you ever arrested? If so that requires supervisory review. Over and above that they are allowed 120 days by regulation to make decision.