Secretary Elaine L. Chao, of the U.S. Department of Transportation (DOT), visits NASA’s Kennedy Space Center in Florida on April 24, 2019. She spoke to Kennedy’s leadership in the Operations and Support Building II and discussed the DOT’s role in enabling commercial space.

Secretary Elaine L. Chao, of the U.S. Department of Transportation (DOT), visits NASA’s Kennedy Space Center in Florida on April 24, 2019. She spoke to Kennedy’s leadership in the Operations and Support Building II and discussed the DOT’s role in enabling commercial space.

Secretary Elaine L. Chao, of the U.S. Department of Transportation (DOT), visits NASA’s Kennedy Space Center in Florida on April 24, 2019. She spoke to Kennedy’s leadership in the Operations and Support Building II and discussed the DOT’s role in enabling commercial space.

Caroline Kennedy, center, is recognized by U.S. Vice President Joe Biden, left, Senate Majority Leader Harry Reid (D-NV), second from left, former U.S. Labor Secretary Elaine Chao, and U.S. Senator John Kerry (D-MA), right, at an event recognizing the 50th anniversary of the inauguration of John F. Kennedy as President of the United States, Thursday, Jan. 20, 2011 in the rotunda at the U.S. Capitol. Photo Credit: (NASA/Bill Ingalls)

Caroline Kennedy speaks at an event recognizing the 50th anniversary of the inauguration of John F. Kennedy as President of the United States, Thursday, Jan. 20, 2011 in the rotunda at the U.S. Capitol. Also participating in the event, seated from left, Reverend Daniel P. Coughlin, Dr. Barry Black, U.S. Congressman John Lewis (D-GA), U.S. House Minority Leader Nancy Pelosi (D-CA), House Speaker John Boehner (R-OH), U.S. Vice President Joe Biden, Senate Majority Leader Harry Reid (D-NV), former U.S. Labor Secretary Elaine Chao, and U.S. Senator John Kerry (D-MA). Photo Credit: (NASA/Bill Ingalls)

NASA Administrator Jim Bridenstine speaks during the National Space Council meeting titled, Moon, Mars, and Worlds Beyond, Winning the Next Frontier, Tuesday, Oct. 23, 2018 at the National War College at Fort Lesley J. McNair in Washington. Chaired by the Vice President, the council's role is to advise the President regarding national space policy and strategy, and review the nation's long-range goals for space activities.Photo Credit: (NASA/Aubrey Gemignani)

NASA Administrator Jim Bridenstine, third from right, applauds as Vice President Mike Pence delivers opening remarks during the National Space Council meeting titled, Moon, Mars, and Worlds Beyond, Winning the Next Frontier, Tuesday, Oct. 23, 2018 at the National War College at Fort Lesley J. McNair in Washington. Chaired by the Vice President, the council's role is to advise the President regarding national space policy and strategy, and review the nation's long-range goals for space activities.Photo Credit: (NASA/Aubrey Gemignani)