The much-delayed "Real ID" will violate the Constitution if allowed to go into effect.

First, In limiting access to ALL federal buildings only to those with a "Real ID," the law infringes on the 1st amendment right "..to petition the Government for a redress of grievances" Already you can find armed security personnel in many federal and other government buildings. If you can't get into the building, you can't see your elected Congressional representatives or testify before any federal entity. If they can make exceptions, then the law is a weapon to silence critics, not to protect anyone.

Second, The need for a "Real ID" to fly on a commercial airplane WITHIN THE UNITED STATES is effectively a "no-fly" list for citizens who don't desire a "real ID." This violates the "general welfare clause of the Preamble, and while it might be construed as lawful under Article One, Section eight "regulate interstate commerce" clause, personal (ie non-business) travel by definition is NOT "commerce." And one could reasonably argue that it violates the 1st Amendment right to peaceably assemble.

Real ID creates an illegal underclass for people who may simply want to be left alone and not have "Big Brother" constantly looking over their shoulders. It is also the first step to communist-style "travel documents" to control the movement of the citizens of the USA.