In February, in vitro fertilization, or I.V.F., was thrown into the spotlight when the Alabama Supreme Court ruled that frozen embryos in the state should be considered children. The decision led to a pause on I.V.F. procedures in parts of the state, and even a pause on shipping embryos out of state, to avoid potential criminal liability. In early March, a law was passed to protect I.V.F. providers, prompting some clinics to resume the procedure, though legal challenges could still emerge.