The U.S. Supreme Court has decided not to hear an appeal related to Arizona's law restricting abortions after 20 weeks. The Ninth Circuit struck down the law, and without the Supreme Court weighing in - that precedent will stand, essentially blocking the law from being enforced.

FOX News Radio's Rich Johnson reports from Washington DC:

The question has been viability-- when is a fetus able to survive outside the womb? Arizona and nine other states enacted laws defining viability as 20 weeks and banning most abortions after that time. Last year, the Ninth U.S. Court of Appeals struck down the Arizona law, saying the ban violates several Supreme Court decisions-- starting with the landmark 'Roe vs Wade' ruling of 1973.

The Supreme Court has now refused to hear Arizona's appeal, so the ruling by the Ninth, will stand.

In Washington, Rich Johnson, FOX News Radio.