Hi
sir,
can a person with single entry visitor/tourist visa to US can enter canada and come back to his country from there
regards
Yes as long as it is within the original admission, ie you arrive on TRV 11/04/09 admitted until 11/10/09, as long as you only go to the US or St. Pierre et Miquelon and return to Canada before 11/10/09 you DONT require a new TRV.
PMM