問關於TN和TD簽證

就要去美國工作，有幾個問題：

1。TN持有者是否可以申請綠卡。以前看到是不可以的，但是請看以下文字：

Question 8. Will my Green Card application cause trouble when I renew my TN?

Anwser: No. Not if you plan your strategy.

Thanks to the wonderful "doctrine of dual intent," you can have both the intent to remain in the U.S. on a temporary and permanent basis---at the same time. (Who said law isn't flexible!) Therefore there's no problem having a green card application pending while you are renewing your temporary TN status.

The regulation for L-1's and H-1's state what you need to show if you are renewing your permit and have a permanent application pending. To be safe, you should be prepared to show the same things for TN renewal.

This dual intent doctrine is in the regulations for L-1 and H-1 permits, but is not written anywhere for TN's. Right now, the INS generally treats TN's under the same doctrine. This could change.

引自：http://www.hansen-company.com/faq_us.html#q8

從上麵的文字看好像可以以TN申請綠卡。請高手指點

2。我夫人的身份將是TD，她還具有加拿大移民身份（持有楓葉卡）。請問她可以申請其
它種類的工作簽證嗎？什麽簽證是最好的？我是說可以比較快的辦下來？是否需要雇主的
資助？

謝謝回答！