"DHS is pursuing development of alternative documents to meet Western Hemisphere Travel Initiative (WHTI) implementation requirements at land and sea ports of entry. DHS is encouraging states to submit proposals to enhance their driver's licenses and identification documents to satisfy WHTI requirements. To meet WHTI requirements, these documents will denote both identity and citizenship, be issued in a secure process and include technology that facilitates travel."
U.S. Dept. of Homeland Security: http://www.dhs.gov/