President Donald J. Trump attends a tax reform for energy workers event.
President Donald J. Trump attends a tax reform for energy workers event at Andeavor Refinery, Wednesday, September 6, 2017, in Mandan, North Dakota. (Official White House Photos by D. Myles Cullen)

 

President Donald J. Trump attends a tax reform for energy workers event.
President Donald J. Trump attends a tax reform for energy workers event at Andeavor Refinery, Wednesday, September 6, 2017, in Mandan, North Dakota. (Official White House Photos by D. Myles Cullen)

 

President Donald J. Trump attends a tax reform for energy workers event.
President Donald J. Trump attends a tax reform for energy workers event at Andeavor Refinery, Wednesday, September 6, 2017, in Mandan, North Dakota. (Official White House Photos by D. Myles Cullen)

 

President Donald J. Trump attends a tax reform for energy workers event.
President Donald J. Trump attends a tax reform for energy workers event at Andeavor Refinery, Wednesday, September 6, 2017, in Mandan, North Dakota. (Official White House Photos by D. Myles Cullen)

 

President Donald J. Trump attends a tax reform for energy workers event.
President Donald J. Trump attends a tax reform for energy workers event at Andeavor Refinery, Wednesday, September 6, 2017, in Mandan, North Dakota. (Official White House Photos by D. Myles Cullen)

 

President Donald J. Trump attends a tax reform for energy workers event.
President Donald J. Trump attends a tax reform for energy workers event at Andeavor Refinery, Wednesday, September 6, 2017, in Mandan, North Dakota. (Official White House Photos by D. Myles Cullen)

 

President Donald J. Trump attends a tax reform for energy workers event.
President Donald J. Trump attends a tax reform for energy workers event at Andeavor Refinery, Wednesday, September 6, 2017, in Mandan, North Dakota. (Official White House Photos by D. Myles Cullen)

 

President Donald J. Trump attends a tax reform for energy workers event.
President Donald J. Trump attends a tax reform for energy workers event at Andeavor Refinery, Wednesday, September 6, 2017, in Mandan, North Dakota. (Official White House Photos by D. Myles Cullen)

 

President Donald J. Trump attends a tax reform for energy workers event.
President Donald J. Trump attends a tax reform for energy workers event at Andeavor Refinery, Wednesday, September 6, 2017, in Mandan, North Dakota. (Official White House Photos by D. Myles Cullen)

 

President Donald J. Trump attends a tax reform for energy workers event.
President Donald J. Trump attends a tax reform for energy workers event at Andeavor Refinery, Wednesday, September 6, 2017, in Mandan, North Dakota. (Official White House Photos by D. Myles Cullen)