Foreign applicants absolutely do not get any kind of boost in JD acceptances. Think about it—they've most likely received their entire education in another country, another legal system. On top of that, there are potential English issues.
The one exception could be if your race is considered a true URM in America and the law school needs to check more boxes of that type.
But in my experience, foreign applicants are evaluated separately, and somewhat less favorably, than U.S. candidates. That doesn't mean that a 4.0/180 from Oxford is any less good than the same from Yale, as both are English-speaking, but going to a top university in Japan, for example, isn't the same.