[carboncopy]

Most states? It's 4.

The original proposal of a pan-North-American shared database and other genuinely suboptimal ideas were scrapped in the revision a decade ago. You're probably thinking of this original iteration when you describe its unpopularity.

[bbanyc]

According to http://www.dhs.gov/real-id-enforcement-brief most states are noncompliant and have received extensions to their deadlines to comply, including 7 of the 10 largest.

[carboncopy]

I stand corrected. Thanks for responding.