I believe that midwifery is illegal in 16 states and in states where it is legal regulations are varied. In some of the illegal states, it is legal to be a Nurse-Midwife and practice homebirth under specific regulations. You can check out the midwifery regulations at the link below. Anyway, I recently came across the article below and am excited that things have changed in Virginia.
Virginia Lifts Midwifery Laws
Legal Status of States