SAN FRANCISCO, Nov 6: A federal appeals court panel on Monday sharply questioned lawyers defending an Arizona law that bans late-term abortions starting at 20 weeks of pregnancy except in medical emergencies, which opponents say is the toughest in the United States. In San Francisco, a three-judge panel of the 9th US Circuit Court of Appeals heard the case after it blocked the Republican-backed Arizona law from going into effect earlier this year. (agencies)