Driver's licenses and IDs that are not Real ID-compliant will no longer get you through U.S. airport security once the law takes effect in a few weeks, but full enforcement may not start right away.

REAL IDs, passed into law in 2005 and pushed back several times, are going to be required to fly from the U.S. and to go into some federal buildings on May 7.

The deadline to get a Real ID is coming up next month, yet millions of Americans still don't have one. From May 7, US citizens who plan to fly to domestic destinations, or visit government buildings,