USA is a is a member of Hague Convention . So it is necessary to to follow the apostille procedure.
There are two procedures we can follow to apostille your certificate / document The procedures for USA
Procedure for Apostille of EDUCATIONAL DOCUMENTS
1. Home department Authentication (HRD)
2. Apostille Sticker from Ministry of External Affairs (MEA)
Procedure for Apostille of NON EDUCATIONAL DOCUMENTS
1. Subdivisional magistrate
2. Apostille sticker from Ministy of External Affairs