not necessary. # v0 e; U- C0 A; qlegally, you may use Canadian driving license for 3 months. but usually, if you stay for less than one year. nobody go for change it. # i5 f& V5 Q$ `& b5 L1 m + U! j" v4 y7 _9 fyou need valid visa and utility bill that indicate you are living in USA. 4 c8 u* _: l+ Q/ n/ y