I131 address help needed

ZOONI

Registered Users (C)
I am applying for advance parole at Texas Service center.

1. Please let me know which of the the below addresses I need to send the documents

USCIS TSC
4141 St. Augustine Road
Dallas, TX 75227

OR

USCIS Texas Service Center
P.O. Box 851182
Mesquite, TX 75185-1182

2. Should I send the documents by regular post or by Express mail.

3. Please share if you have an idea as to How many days it is taking to approve I-131.

Please advice.
 
I sent to:
USCIS Texas Service Center
P.O. Box 851182
Mesquite, TX 75185-1182

2. Certified mail
3. It is Random
 
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