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WASHINGTON, DC - AUGUST 05: U.S. President Barack Obama speaks about the Iran nuclear agreement August 5, 2015 at American University in Washington, DC. Obama is pushing for congress to appove the nuclear deal reached with Iran. (Photo by Pete Marovich-Pool/Getty Images)

WASHINGTON, DC - AUGUST 05:  U.S. President Barack Obama speaks about the Iran nuclear agreement  August 5, 2015 at American University in Washington, DC. Obama is pushing for congress to appove the nuclear deal reached with Iran.  (Photo by Pete Marovich-Pool/Getty Images)