I will file NIW 140 form
can I use E-file ? if yes , the supporting document ( including everything such as reference letter and CV ....) , which center send ? NSC or TSC , I am in OHio state now ( from 140 form instruction , nee send to NSC center )
use which approach to mail , USPS , or postoffice ot Fedex? WHICH ONE IS BEST ONE ?
THANKS A LOT !
BEST REGARDS FOR EVERYONE .nullI will file NIW 140 form