见MITBBS:
问:如果移民局批准H-1B延期,对回美证有什么影响?
谢律师答:移民局解释说,对H-1B延期的批准具有终止回美证批准而将H-1B持有人归入H-1B非移民身份类别的效果。原文为 "If the Service (USCIS) approves the alien's application for an extension of nonimmigrant status, the decision granting
such an extension will have the effect of terminating the grant of parole and admitting the alien in the relevant nonimmigrant classification."