Help needed

帮父母申请绿卡, 要求补件>

我用的是12 年前我出国时办的出生公证.

今天收到补件信, 要求我的BIRTH
CERTIFICATE.

“The
document must contain the seal of the issuing office including the date of
registration and signature of the registrar. A Notarial Certificate in itself
may not be adequate evidence of the facts claimed, and is best used in
conjunction with primary and contemporaneous secondary evidence: old land deeds
and old family registers; letters or money receipts; family records from
countries that have reliable public documents; school and medical records.
Please submit a complete copy of your birth certificate, which shows the name
of the beneficiary as your natural parents.

 我该用什么？重新办出生公证？旧户口簿？你们有类似的经历或经验吗？谢谢。