U.S. Representative Jeb Hensarling (R-TX) (C) arrives for a Republican caucus meeting at the U.S. Capitol in Washington, October 9, 2015. REUTERS/Jonathan Ernst

U.S. House Speaker Paul Ryan (R-WI) speaks at a news conference following a closed Republican party conference on Capitol Hill in Washington, U.S. May 11, 2016. REUTERS/Yuri Gripas/File Photo

U.S. President Barack Obama meets with Israeli Prime Minister Benjamin Netanyahu in the Oval office of the White House in Washington November 9, 2015. REUTERS/Kevin Lamarque

(FILES) This file photo taken on September 23, 2015 shows a Boeing 737 aircraft in Air China livery as Chinese President Xi Jinping (R, on podium) speaks beside Ray Conner (L), President and CEO of the Boeing Commercial Airplanes, and Dennis Muilenburg (2nd L), President and CEO of the Boeing Company, after his tour of the aircraft manufacturer's assembly line in Everett, Washington. China will become the world's first trillion-dollar aviation market as its expanding middle class takes to the skies in ever greater numbers, US manufacturer Boeing predicted September 13, 2016. The world's most populous country is expected to add more than 6,800 new aircraft to its commercial fleet worth $1.03 trillion by 2035, Boeing said in its annual China Current Market Outlook. / AFP PHOTO / POOL / MARK RALSTONMARK RALSTON/AFP/Getty Images

WASHINGTON, DC - SEPTEMBER 12: A demonstrator wearing a Donald Duck costume dances in front of the Trump International Hotel during the hotel's first day of business September 12, 2016 in Washington, DC. The Trump Organization was granted a 60-year lease to the historic Old Post Office by the federal government before Trump announced his intent to run for president. The hotel has 263 luxury rooms, including the 6,300-square-foot 'Trump Townhouse' at $100,000 a night, with a five-night minimum. (Photo by Chip Somodevilla/Getty Images) ***BESTPIX***

U.S. President Barack Obama in Washington, U.S., September 11, 2016. REUTERS/Joshua Roberts

WASHINGTON, DC - SEPTEMBER 12: U.S. President Barack Obama (C), (L-R) Senate Majority Leader Sen. Mitch McConnell (R-KY), Speaker of the House Rep. Paul Ryan (R-WI), Senate Minority Leader Sen. Harry Reid (D-NV) and House Minority Leader Rep. Nancy Pelosi (D-CA) during an Oval Office meeting at the White House September 12, 2016 in Washington, DC. President Obama met with congressional leaders to discuss priorities for the remainder of the September session and to provide a readout of his visit to Asia. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - SEPTEMBER 12: U.S. President Barack Obama (R) speaks as Speaker of the House Rep. Paul Ryan (R-WI) (L) listens during an Oval Office meeting at the White House September 12, 2016 in Washington, DC. President Obama met with congressional leaders to discuss priorities for the remainder of the September session and to provide a readout of his visit to Asia. (Photo by Alex Wong/Getty Images)