I have a question on the impact of filing NIW-140 on TN visa. According to the following article (click the link below) by Zhang & Associate, P.C., it seems to me that filing 140 will reject any admission, initial issuance or renewal of TN visa. http://www.hooyou.com/cn_version/TN/timing_strategy.html However, also on the website of Zhang & Associate, P.C., in another article (click the link below), filing 140 seems to me that have no impact on admission, initial issuance or renewal of TN visa http://www.hooyou.com/cn_version/news/news021709tn.html Can any expert or current TN visa holders give me an accurate answer? I need it now. Thank you very much!