not necessary. 4 f) W* R9 B/ q+ y- elegally, you may use Canadian driving license for 3 months. but usually, if you stay for less than one year. nobody go for change it. % V# k: _4 R5 W) v0 p( y . a3 D- J" O0 d# r8 Z1 tyou need valid visa and utility bill that indicate you are living in USA.- f3 A' m: a* o* k