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WASHINGTON, DC - MARCH 28: US President Donald Trump makes remarks prior to signing an Energy Independence Executive Order at the Environmental Protection Agency (EPA) Headquarters on March 28, 2017 in Washington, DC. The order reverses the Obama-era climate change policies. US Vice President Mike Pence look on from left and EPA Administrator Scott Pruitt looks on from right. (Photo by Ron Sach-Pool/Getty Images)

WASHINGTON, DC - MARCH 28:   US President Donald Trump makes remarks prior to signing an Energy Independence Executive Order at the Environmental Protection Agency (EPA) Headquarters on March 28, 2017 in Washington, DC. The order reverses the Obama-era climate change policies.  US Vice President Mike Pence look on from left and EPA Administrator Scott Pruitt looks on from right.  (Photo by Ron Sach-Pool/Getty Images)