The Welsh Government's top legal officer has asked the Supreme Court to decide whether or not the Assembly has the power to introduce a law to make businesses or insurers pay the costs of treating asbestos patients.
The Counsel General, Theodore Huckle, has referred the bill after representatives of the insurance industry questioned the Assembly's power to legislate on the matter.
It's the first time the Counsel General has taken this step although the two previous bills have been referred by the UK Attorney General. The Supreme Court cleared one concerning local government bye-laws and will rule on another to protect the wages of agricultural workers in February 2014.
Parents and pupils have marched from Cwmcarn Village to Cwmcarn High School today to show support for the school.
The site shut last year after abestos was found.
Parents and pupils have told ITV News that they are worried about its future.