USCIS has announced that beginning July 1, 2019 it will no longer accept Form I-407, Record of Abandonment of Lawful Permanent Resident Status at any of their international field offices.
The announcement states:
Individuals who wish to voluntarily record abandonment of their lawful permanent resident (LPR) status must submit Form I-407 via mail to:
USCIS Eastern Forms Center
Attn: I-407 unit
124 Leroy Road
PO Box 567
Williston, VT 05495
Please review USCIS News Alert, “USCIS Will No Longer Accept I-407 at International Field Offices” for more details.
Source of Information:
USCIS (USCIS.gov),6/17/19, News Alert: