FILE. In this Sept. 11, 2013 file photo, New York Mayor Michael Bloomberg, left, and  Bill de Blasio, who was later elected to succeed Bloomberg, attend a 9/11 Memorial ceremony marking the 12th anniversary of the 2001 terrorist attacks on the World Trade Center in New York. When Michael Bloomberg became New York City's mayor 12 years ago, he was a political neophyte faced with the aftermath of the Sept. 11 terror attacks. Now, as he prepares to leave office at month's end, he has dramatically reshaped the city.(AP Photo/Adrees Latif, Pool, File)
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