not necessary. " r! |8 z/ |# I; s( M: alegally, you may use Canadian driving license for 3 months. but usually, if you stay for less than one year. nobody go for change it. 8 O; t$ p% ], q9 _ C " e* Q9 C# d; D( C8 U' q% kyou need valid visa and utility bill that indicate you are living in USA. 0 f2 p4 [5 e6 x0 |. V/ t/ M- |