Sen. John Cornyn (R-Texas), one of the architects of the Discovery moving plan, said that Isaacman is on board.
A memo sent by the Smithsonian said transporting Discovery could swell in price and result in irreparable damage to the space shuttle.
Col. Eileen Collins was the first woman to pilot and command a NASA space shuttle. Collins commanded the first flight after the 2003 Columbia tragedy, which also experienced a foam-shedding issue.