The Florida Senate on Wednesday unanimously passed a plan that would designate at least four behavioral-health teaching hospitals as lawmakers look to improve care for people with mental health and substance abuse issues. “This is the next step in really modernizing the whole system of mental health,” Senate Health and Human Services Appropriations Chairwoman Gayle Harrell, R-Stuart, said. “When you look at the problem that we have, not just in the state of Florida but across the country, in the whole mental-health, substance-abuse issues, we have got to address that. It came to the forefront …