your children need to get the TD or H4 I-94 (corresponding to your spouse's status e.g. TN or H1) at the port of entry to enter US to file I-485, not just use their Canadian passport using visa waive program as a visitor.
By the way,
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• 回複:By the way, -maty- ♀ (29 bytes) () 04/25/2011 postreply 20:45:30