not necessary. 8 d6 Q( y) G) @0 K% P% S* r' I' Klegally, 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 q6 |9 a4 |4 ?5 t p* ^4 H/ j- H' R3 {; P4 ^you need valid visa and utility bill that indicate you are living in USA. 1 w/ k% {+ X( _7 `