not necessary.6 {$ U/ c* x! F% h& f6 ~2 Z
legally, you may use Canadian driving license for 3 months. but usually, if you stay for less than one year. nobody go for change it. ; M7 [' E9 v6 n- P* B3 F* l! K 4 W4 k w/ X, z5 [% k9 Kyou need valid visa and utility bill that indicate you are living in USA.! ^$ Z+ ~' X) s3 t