U.S. President Donald Trump, center, displays a signed directive on tax and Wall Street regulations as Steven Mnuchin, U.S. Treasury secretary, right, Representative Claudia Tenney, a Republican from New York, left, and Senator David Perdue, a Republican from Georgia, stand in Washington, D.C., U.S., on Friday, April 21, 2017. The tax code became too expensive and burdensome under former President Barack Obama's administration, making a review of 2016 and 2017 tax rules necessary, Mnuchin said. Photographer: Pete Marovich/Bloomberg via Getty Images