How disputes within the new ATC system would be handled became another front-burner issue, but never evolved into anything in writing that opponents thought made realistic sense. In a June Politico article, DOT Secretary Elaine Chao said the administration was concerned that so many users, especially those in the GA world, seem so "misinformed" about the Shuster ATC proposal. She said that if members of the general aviation industry thought any new entity running the system was limiting their access to U.S. airspace, they could always appeal to their lawmakers. "Being in the private sector, being in the nonprofit sector, does not mean that it's exempt from congressional oversight," Chao said. The Secretary did not offer any details of how that appeal system might actually work, however.