因为我是F-1 来美，转过专业， 然后工作， 所以准备了很多材料。
这个材料清单是和我的邀请信一起递给签证官的：
Document List
Required Documents
1) Passports of XXX and XXX
2) DS-156 &DS-157 Forms of XXX and XXX
3) Receipts of visa application fee.
Inviter’s Documents
1) Original invitation letters (Chinese & English)
2) Copies of passport
3) Copies of Visa
4) Copy of I-797
5) Original employment confirmation letter
6) Copy of employment offer letter
7) Copies of I-20 and I-94
8) Copies of MS diploma and SSN
9) Copies of W-2 and pay stub (Recent
