not necessary. 6 j9 L4 X2 `" Nlegally, you may use Canadian driving license for 3 months. but usually, if you stay for less than one year. nobody go for change it. ; A6 u: x9 w! _* M5 J# U: J / k8 l" x' P# [$ K9 F* Q; `" f# tyou need valid visa and utility bill that indicate you are living in USA. ) s6 f! X5 s' \6 U! B" Z