US: 'I am back,' says Bernie Sanders at presidential campaign rally "I am back," says Democratic presidential candidate Bernie Sanders, who suffered a mild heart attack this month, as he addresses supporters at a rally in the neighborhood of Long Island City in New York. US Representative Alexandria Ocasio-Cortez, Democrat of New York, endorsed Sanders at the rally. [COMPLETES VIDI1LK6XJ_EN] IMAGES AND SOUNDBITES