not necessary.& @; V/ m, w" o% z# \
legally, you may use Canadian driving license for 3 months. but usually, if you stay for less than one year. nobody go for change it. ' v9 w: H' [3 m! I* ~+ M- Y& O
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you need valid visa and utility bill that indicate you are living in USA. - P% q, l. s2 s& }0 T