A law degree can be used internationally. The majority of US states allow graduates trained outside the country to become members of their bar. There are, however, differences in requirements from state to state, which is detailed in the Comprehensive Guide to Bar Admission Requirements.
The U.S. qualification is more achievable than you think, even if you are a foreign law graduate, lawyer, or U.S. LL.M. student. You are likely eligible to sit for your state bar exam with your current credentials.
Particularly in New York and California, foreign law graduates and lawyers are permitted to sit for their bar examinations without regard to their nationality or residence.
For candidates that did not earn a J.D. in the United States, it is an advantage not to have to memorize statutory provisions and case law. Candidates are tested on their ability to think like a lawyer during the exams. Legal law must be understood and applied properly in a hypothetical situation.