回複：請教法律專家一個問題

When an Exchange Visitor in J-1 status is admitted to the United States, he or she is issued a Form I-94 (Arrival/Departure Record), marked D/S for “Duration of Status”. Section 6 of Form DS-2019 is also annotated D/S. J-1 exchange visitors may remain in the United States 30 days after the ending date on the Form DS-2019. The D/S notation means that the USCIS considers exchange visitors to be in status as long as their Forms DS-2019 are valid and they engage only in activities permitted by the Form DS-2019. They may file for extension of stay if that is necessary for the accomplishment of program objectives.

所以先決條件是您需要在原來邀請您的公司或是研究單位從事您所被邀請所做的工作，如果您一旦因為任何原因不再從事相關的工作,這個 DS-2019 表就自然失效,也就是說您需要在30天之內離開美國.

所有跟帖： 

• 謝謝單身老貓 -麥芽媽- ♀ (58 bytes) () 08/08/2009 postreply 16:25:03