https://www.fbi.gov/services/cjis/identity-history-summary-checks#Submit-a Request to the FBI
If DIBP have requested it and if you have lived in the US for a period of 12 months or more cumulatively in the last 10 years, then yes it is mandatory.
If DIBP have requested it and if you have lived in the US for a period of 12 months or more cumulatively in the last 10 years, then yes it is mandatory.
