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NEW YORK, NY - APRIL 22: U.S. Secretary of State John Kerry signs the Paris Agreement For Climate Change while holding his granddaughter Isabelle Dobbs Higginson during the Paris Agreement For Climate Change Signing at United Nations on April 22, 2016 in New York City. (Photo by Jemal Countess/Getty Images)

NEW YORK, NY - APRIL 22:  U.S. Secretary of State John Kerry signs the Paris Agreement For Climate Change while holding his granddaughter Isabelle Dobbs Higginson during the Paris Agreement For Climate Change Signing at United Nations on April 22, 2016 in New York City.  (Photo by Jemal Countess/Getty Images)