NEW YORK, Jan 30 (Reuters) - A grand jury is hearing evidence in New York over former President Donald Trump's role in hush money payments to porn star Stormy Daniels during his 2016 presidential campaign, two sources with knowledge of the matter told Reuters. Pecker was seen entering the lower Manhattan building where the grand jury is empaneled, according to the New York Times, which first reported on the grand jury on Monday. See here for a complete list of exchanges and delays