EPA chief Scott Pruitt speaks after President Trump announced the U.S. is pulling out of the Paris climate agreement on June 1, 2017.

EPA chief Scott Pruitt speaks after President Trump announced the U.S. is pulling out of the Paris climate agreement on June 1, 2017.

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The Paris Climate Decision Is Trumpism In Its Purest Form

President Donald Trump's decision to pull the United States out of a global climate accord represents the clearest evidence yet that his worldview represents a radical break from that of the Republican and Democratic presidents who have preceded him in office over the last seven decades.