The Real ID Act was signed in 2005 by President Bush, in order to "increase the security and to diminish the risks of terrorism in the post-9/11 era." It requires all states to give mountains of information to the federal government about the public to create a unified national ID.   

Many civil liberties organizations oppose Real ID and ask the states not to implement it or give data about their citizens to Washington, D.C.

Real ID creates major concerns over privacy. Indeed, Real ID would allow the federal government to know where you are at any moment: when you took a plane, when you came back home... And employees from the state, at all levels, would have access to this centralized information.  It gets worse: the production of this ID would be committed to private firms that could use information for commercial goals.