Before 911 ,you may take your fingerprint while you
enter USA,but now you have to take it before getting
interview.Security check include background check & fingerprint check,I think you will get it when your case is proceing in USA consulate in Canada.
enter USA,but now you have to take it before getting
interview.Security check include background check & fingerprint check,I think you will get it when your case is proceing in USA consulate in Canada.