There are no formal requirements for admission to law school. If you have a BTL, an interesting resume and a good background for pre-law (writing skills in English, a respectable background in history/social sciences), and good LSAT scores, a BTL should get you into an American law school (it also helps to be able to pay the $150K or so tuition without financial aid).
If the school offering the BTL has regional accreditation, it is worth as much as any other degree that is of little relevance to the graduate program you are going to. One can always supplement a BTL by taking courses to improve one’s “resume”.