not necessary. $ ~4 r; b% D' {* W2 A4 dlegally, you may use Canadian driving license for 3 months. but usually, if you stay for less than one year. nobody go for change it. d" |5 P1 D8 V/ M ) I: V$ i( O1 E$ {# Gyou need valid visa and utility bill that indicate you are living in USA. % i% d& _& }. Y$ _ F