1.I AM A GRADUATE OF LAW FROM INDIA.
2.IS THERE ANY EXAM WHICH IF I TAKE WILL LET ME PRACTICE LAW IN USA.
EXAMPLE FOR GRADUATE DOCTORS ,THERE IS USMLE EXAM IN USA AND THEN ONE CAN PRACTICE IN USA.

You can take the New York Bar Exam or the California Bar exam, however you can practice only in New York State or California respectively.

However, getting a work visa is a formidable challenge for foreign lawyers in the United States.