这熊猫的脑瓜筋就是死板。美移民法规定： 当非移民签证之延期申请及时递交后，

在等待结果期间，原移民签证视作未过期。请注意下面移民法相关部分的斜体字：Under Section 222(g) of the Immigration and Nationality Act (“INA”), a nonimmigrant alien that stays in the U.S. beyond the expiration date indicated on their I-94 will cause their visa to become automatically revoked, and consequently the alien will not be able to return to the US unless he or she obtains a new visa. However, the alien’s visa will remain valid where a timely, non-frivolous, application for Extension of Status or Change of Status is filed, and where the alien has not engaged in unlawful employment.