not necessary. 4 p% s0 q+ o: V& clegally, you may use Canadian driving license for 3 months. but usually, if you stay for less than one year. nobody go for change it. ( {4 m! W2 _9 l# G" C
4 W1 e& ?9 @9 k0 Q( T3 iyou need valid visa and utility bill that indicate you are living in USA. & ^/ L+ v' f" S( M