Following are the documents which are must for MS in USA:
1) Transcripts
2) Marksheets and pass certificates
3) Bachelor's degree or equivalent
4) Letters of Recommendation (LOR)
5) Entrance Exam Scorecards - GRE/ GMAT/ LSAT/ MCAT
6) English Language Proficiency Test Scores
7) Passport
8) Resume/Curriculum Vitae