not necessary.: o& ]9 h! W% V8 t7 ~& l+ e
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. - f7 S( G& o# i. j: h7 E
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you need valid visa and utility bill that indicate you are living in USA.0 {1 d; g/ f6 j8 ~% K