President Obama, who signed the Shark Conservation Act into law last month, apparently didn't check out the menu before he made a surprise visit Thursday to a restaurant in San Francisco's Chinatown that is among a handful still serving shark fin soup, a delicacy that has been outlawed in California. The Great Eastern restaurant, a Chinatown landmark on Jackson Street, has a $48 single serving of braised shark fin soup on its menu, and was the site of the president's drop-in after he landed in San Francisco to attend three fundraising events. Obama made an unannounced visit to the venue,...