Sen. Orrin Hatch, R-Utah, chair of the Senate Finance Committee, arrives for hearing on the nomination of Charles Rettig for Internal Revenue Service Commissioner, Thursday, June 28, 2018, on Capitol Hill in Washington. The Senate is assessing President Donald Trump's choice to head the IRS, Charles Rettig, a Beverly Hills tax lawyer who would face the colossal challenge of overseeing the most sweeping overhaul of the U.S. tax code in three decades. (AP Photo/Jacquelyn Martin)