8老师你好，我由于换雇主，重新向USCIS申请了H1B签证，也重新申请了老婆的H4签证。如果我收到USCIS的H1B receipt number后，我老婆能离开美国吗，会造成她H4失效吗？
-No, but H-4 extension application is useless no matter it is denied or approved because she has to apply for the H-4 visa in China to come back, anyway. You need to send her the copy of your H-1 approval notice for her to apply for the H-4 visa in China after your H-1 transfer is approved. She cannot come back before your H-1 is approved.
You have wasted money to extend your H-4 status if she will leave US for China before her current H-4 I-94 expires.
-No, but H-4 extension application is useless no matter it is denied or approved because she has to apply for the H-4 visa in China to come back, anyway. You need to send her the copy of your H-1 approval notice for her to apply for the H-4 visa in China after your H-1 transfer is approved. She cannot come back before your H-1 is approved.
You have wasted money to extend your H-4 status if she will leave US for China before her current H-4 I-94 expires.
