Most airports around the United States operated smoothly as new REAL ID requirements took effect because travelers without the updated document were still allowed to move through security easily.

Homeland Security Secretary Kristi Noem warned travelers on Tuesday that the new Real ID law will go into effect Wednesday.

The head of Homeland Security says travelers who aren’t REAL ID compliant by the upcoming deadline this week will still be able to fly but should be prepared for extra scrutiny.

Wednesday is the deadline after which TSA rules will be tightening for travelers when it comes to your ID.

Voting rights groups warn legislation passed by the House requiring documentary proof of U.S. citizenship for anyone registering to vote could disenfranchise millions of Americans.

Starting on May 7, the Transportation Security Administration will be requiring a REAL ID for adults planning to board domestic commercial flights.