not necessary. # u6 B- E P1 hlegally, you may use Canadian driving license for 3 months. but usually, if you stay for less than one year. nobody go for change it. $ ^& ~, U7 N; Z4 e+ E% D; K 8 s3 l$ g H, |7 A$ u# _you need valid visa and utility bill that indicate you are living in USA.+ G1 A( D* ?/ T4 P: _