DS-2019即原来的IAP-66表. 应该有邀请方负责寄出.DS-2019上面有对方提供的你在美的费用. 签证时需要财力证明. J1签证需要的材料大概如下: Check List 1 Passport 2 Visa Application Fee Receipt 3 DS-156, DS-157, DS-158 4 DS-2019 Form 5 Offer Letter 6 Research Plan according to Prof. 7 Introduction of Prof. and the lab 8 Introduction of the project 9 Resume 10 Certificate of Ph.D. Degree 11 Publication List 12 Reprints of papers 13. Transcript of Ph. D 14. Abstract of Ph. D thesis 15 E-mail between Prof. and you
麻烦采纳，谢谢!
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