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WASHINGTON, DC - APRIL 21: (AFP OUT) U.S. President Donald Trump (L) listens as Secretary of Treasury Steven Mnuchin delivers remarks in the US Treasury Department building on April 21, 2017 in Washington, DC. President Trump is making his first visit to the Treasury Department for a memorandum signing ceremony with Secretary Mnuchin. (Photo by Shawn Thew - Pool/Getty Images)
WASHINGTON, DC - APRIL 21: (AFP OUT) U.S. President Donald Trump (L) listens as Secretary of Treasury Steven Mnuchin delivers remarks in the US Treasury Department building on April 21, 2017 in Washington, DC. President Trump is making his first visit to the Treasury Department for a memorandum signing ceremony with Secretary Mnuchin. (Photo by Shawn Thew - Pool/Getty Images)

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What we don't know about Trump's tax plan

CNN's Anderson Cooper breaks down what we do know about President Trump's proposed tax plan, as well as what we don't know.

What we don't know about Trump's tax plan

CNN's Anderson Cooper breaks down what we do know about President Trump's proposed tax plan, as well as what we don't know.