WASHINGTON -- FBI Director Chris Wray is raising national security concerns about TikTok, warning Friday that control of the video sharing app is in the hands of a Chinese government "that doesn't share our values."That should concern us," Wray told an audience at the University of Michigan's Gerald R. Ford School of Public Policy.U.S. officials and the company are now in talks over a possible agreement that would resolve American security concerns, a process that Wray said was taking place across U.S. government agencies."The FBI's input is being considered as part of our ongoing negotiations with the U.S. Government," TikTok spokesperson Brooke Oberwetter said in an emailed statement."While we can't comment on the specifics of those confidential discussions, we are confident that we are on a path to fully satisfy all reasonable U.S. national security concerns and have already made significant strides toward implementing those solutions.""