If you graduated from a university degree, no matter what kind of major, got a not bad LSAT score and have enough money, you are qualified to pursue JD in US
I do not think so. if you get LSATand GPA high enough. Your background doesnot matter. In fact, Law school pay more attention to LSAT and GPA. JD bases on only university education, not your experience.
You do have nice background. it would be a plus in your application. Some law schools suc as Northwestern like applicants with some experience. But i don't think background in law is preferred than that in other areas. Diversity is what they really want.
Most schools would take your work experience into consideration, but it is not a major factor. A lot Americans go to law school directly out of college.