请教8老师:
1,持有1年有效的2019表申请Waiver,是否从获批waiver开始2019表就失效了?
-Do you mean your J-1 status is only for one year? If so, you may have no enough time to get J-1 waiver. As far as I know, you need to be J-1 status for at least one year to be qualifed for J-1 waiver based on the Chinese Embassy requirements. So, you had better seek J-1 extension before you apply for J-1 waiver.
还是可以继续用该2019表待在美国直至过期,同时申请H1签证或者绿卡?-If your J-1 status is still valid when you get the J-1 waiver, you still can stay in US as a J-1 holder until the J-1 status expires, but you cannot extend your J-1 status after you get J-1 waiver and of course, you can change your status to H-1 or apply for green card.
2,在等待Waiver结果期间能够回国吗?-Yes.
3,如果在2019表过期前没能拿到H1或者绿卡,回国后waiver还有效吗?-Yes as long as it is approved.
也就是能否回国继续申请H1或者绿卡?-Yes. But you need to find a job in US for H-1 application.