According to this article, the count is up to five. Five states now provide or are moving forward to providing for faith-based religious protections for adoption agencies which place a child’s needs and best interest below the religiously held beliefs of the adoption agency. Essentially allowing an adoption agency to ignore a child’s best interests over religiously held beliefs.
The five states are: Alabama (passed on May 3, 2017), South Dakota (passed in March 2017), Virginia (passed in 2012), Texas (pending legislation), and Oklahoma (pending legislation).
Georgia was moving in this direction, but the bill died when the legislature adjourned without acting on it in March 2017.