By the way,

來源: 2011-04-25 04:50:15 [博客] [舊帖] [給我悄悄話] 本文已被閱讀:

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.