The only risk after you submit your I-140, you may wait for long time. During your waiting time,you may not be allowed to renew your TN Visa. So that's why TN holder first change TN to H1-B and then apply for PERM
回复:请问持TN签证有没可能办绿卡?
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• 回复:回复:请问持TN签证有没可能办绿卡? -863211- ♂ (378 bytes) () 05/02/2011 postreply 20:06:20