2013/05/03 Headlines: Bangladesh Garment Building Toll Hits 500; Engineer Detained; Obama Faces Immigration Protests in Mexico Visit; Obama Defends Challenge to Emergency Contraception Ruling; Assata Shakur Added to FBI's Most Wanted Terrorists List; Pro-Assad Forces Accused of Killing up to 100 in Raid; April Was Iraq's Deadliest Month Since 2009; U.N.: Close to 260,000 Died in Somali Famine; At Least 60 Killed in Sudan Mine Collapse; Boston Bombing Suspects Allegedly Planned July 4th Attack; Obama Unveils Trade, Commerce Cabinet Picks; Rep. Mel Watt Tapped to Head Federal Housing Finance Agency; Maryland Repeals Death Penalty, Legalizes Medical Marijuana; Rhode Island Legalizes Marriage Equality