(ANTIMEDIA) To comply with the 2005 Real ID Act, which the U.S. government has been slowly implementing for the past decade, citizens in a number of different U.S. states will now be forced to obtain a passport if they want to board an airplane — even for domestic flights.

The Department of Homeland Security and representatives with the U.S. Customs and Border Protection have declined to comment on why certain states have been singled out, but starting in 2016, residents of New York, Wisconsin, Louisiana, Minnesota, New Hampshire, and American Samoa will need a passport to fly domestically. All other states will still be able to use their state-issued driver's licenses and IDs — for now, at least.

According to the Department of Homeland Security's guidelines on enforcement of the Real ID Act,

"The Department of Homeland Security (DHS) announced on December 20, 2013 a phased enforcement plan for the REAL ID Act (the Act), as passed by Congress, that will implement the Act in a measured, fair, and responsible way.

Secure driver's licenses and identification documents are a vital component of our national security framework. The REAL ID Act, passed by Congress in 2005, enacted the 9/11 Commission's recommendation that the Federal Government 'set standards for the issuance of sources of identification, such as driver's licenses.' The Act established minimum security standards for license issuance and production and prohibits Federal agencies from accepting for certain purposes driver's licenses and identification cards from states not meeting the Act's minimum standards.  The purposes covered by the Act are: accessing Federal facilities, entering nuclear power plants, and, no sooner than 2016, boarding federally regulated commercial aircraft.

States and other jurisdictions have made significant progress in enhancing the security of their licenses over the last number of years. As a result, approximately 70-80% of all U.S. drivers hold licenses from jurisdictions: (1) determined to meet the Act's standards; or (2) that have received extensions. Individuals holding driver's licenses or identification cards from these jurisdiction may continue to use them as before. 

Individuals holding licenses from noncompliant jurisdictions will need to follow alternative access control procedures for purposes covered by the Act.  As described below, enforcement for boarding aircraft will occur no sooner than 2016."