Bruce Schneier has saved future bureaucrats some time and written the core text of the 2015 US Congressional report on the impacts of the REAL ID Act. The report will find that the creation of this national ID card back in 2005 introduced unnecessary security risks, compounded existing data privacy issues, incurred extraordinary costs to implement and maintain, represented a troubling power grab by the federal government over state systems for issuing identification, and, perhaps worst of all, was passed without any serious debate in Congress or in public because of its attachment to a bill funding operations in Iraq. The report will also find that the ID card has not substantially met any of the goals its introduction was intended to achieve. Given the above, the report concludes that the REAL ID Act was a shining example of the quality and sensibility that characterizes much of the law-making that went on at the time.
(Please note, because of the time that has passed since I wrote this article, it may no longer reflect my current views or the most accurate and complete information available on this subject.)