1， 上個月剛遞交了 I-485 就不能再去辦新TN了， 現在去B公司用去年申請的TN 可以嗎？
-Do you mean you got the TN I-94 at the border from your last entry based on Company B sponsor, and then, you did not work for Company B, but worked for Company A since then? If so, you have violated the TN rule and worked illegally since then.
2， 我孩子的TD 簽證 是現在的 A公司， 如果我去B公司的話， 我孩子的TD 身份還有效嗎？
-Yes if your TN is valid.
她當時沒有辦B公司的TD
3， 是不是我當時辦了B公司的TN後， A公司的TN就失效了？ 那樣的話我這一年在A公司上班就不合法了。
-Yes if you only got the TN at the border from your last entry. You only can have two TN at the same time by this way: at least one of the two TN is obtained within US through the employer filing I-129. You cannot got two TN at the border. I suggest you to consult an immigrant lawyer as soon as possible.
悔不該當初沒有多方谘詢， 考慮不周才有如此麻煩。
情況有點兒複雜， 煩勞8老師費心賜教， 謝過啦先
