More than 800,000 people have now signed the Change.org petition for Caylee's Law, as legislators in at least 16 states have pledged to introduce their own Caylee's Laws.
Other states where lawmakers are considering such measures include
Georgia, Kansas, Louisiana, New Jersey, New York, North Carolina, Ohio, Oklahoma, Pennsylvania, South Carolina, Texas and West Virginia, according to news reports.
Florida's proposal would make it a felony for a parent or other caregiver to not report a child under the age of 12 missing after 48 hours. It also makes it a felony to not report a child's death or "location of a child's corpse" to police within two hours of the death.
Had Florida's measure been in place and Anthony been convicted, she could have faced another 15 years behind bars.