Bill De Blasio

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New York City Mayor Bill de Blasio, left, and New York Gov. Andrew Cuomo talk during the NY Rising Spring Conference on Wednesday, April 23, 2014, in Albany, N.Y. (AP Photo/Mike Groll)

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New York City Mayor Bill de Blasio, left, and New York Gov. Andrew Cuomo talk during the NY Rising Spring Conference on Wednesday, April 23, 2014, in Albany, N.Y. (AP Photo/Mike Groll)

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FILE - In this Jan. 27, 2010 file photo, horse-drawn carriage roll through New York's Central Park. Mayor Bill de Blasio is pulling back the reins on his plans to quickly get rid of New York City’s horse-drawn carriage industry. He has been stung by a recent outpouring of support for the colorful coaches that have clip-clopped their way through Central Park for more than 150 years. At first, he said he would ban the horses during his first week in office. Now, facing resistance from the usually compliant City Council, he says he will end the “inhumane” practice by year’s end. (AP Photo/Mary Altaffer, File)

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This image released by ABC shows host Barbara Walters, left, with New York City Mayor Bill de Blasio and his wife Chirlane McCray on ABC's "The View," Monday, April 21, 2014 in New York. De Blasio is proclaiming May 16 as “Barbara Walters Day” in New York City. Walters is retiring that day after a storied television reporting career that has spanned five decades. (AP Photo/ABC, Lou Rocco)

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FILE - This March 26, 2014 photo provided by ABC shows, co-host Barbara Walters on "The View," in New York. Mayor Bill de Blasio is proclaiming May 16 as “Barbara Walters Day” in New York City. Walters is retiring that day after a storied television reporting career that has spanned five decades. De Blasio made the announcement Monday, April 21, when he appeared on “The View,” the daytime talk show that Walters co-hosts. (AP Photo/ABC, Lou Rocco, File)