As Texas attorney general in 2004, Greg Abbott defended the constitutionality of a granite slab bearing the Ten Commandments on the Capitol grounds. As governor, he signed a bill into law Saturday requiring Texas public school classrooms to display copies of the Ten Commandments. (AP Photo/Harry Cabluck)

Texas will require all public school classrooms to display the Ten Commandments under a new law that will make the state the nation’s largest to attempt to impose such a mandate.