When you ask your VDC or Municipility to make a Birth Certificate, don't forget to include your mother's name on that certificate. According to US rules, In birth certificate both father's and mother's name along with birth date should be mentioned. Otherwise you can show your citizenship, but there is only father's name and birth date, not mother's name.

Therefore, make your birth certificate from your VDC or municipility, translate from notary or kitab khana and submit. Good Luck.