inevitable mission creep, ending with the proof of self being required at polling places, to rent a house, buy a gun, open a bank account, acquire credit, board a plane or even attend a sporting event or log on the internet.
Except for some sporting events and accessing the internet, the other events all require ID, some require photo ID and others do not. Please, stop the hysterics. The issue is not whether you need to show an ID to vote, or to rent a house (credit report, anyone?), or buy a gun (background check, hello?), or board a plane (where have you been for the last 12 years?).
The bigger issue is does the DHS - or a client of their data - have authority to prevent you from carrying out these activities based on the data - identity and other - stored its databases. That would be a sensible concern.
Stop whining about policies of private institutions and state and local governments that are sensible and non-invasive. The arm-waving and yelling is immature, and cheapens other more valid concerns about the use of personally identifying (and classifying) data.