Beginning January 31 2008, United States and Canadian citizens ages 19 and older will be asked to present documentation from a specified list of acceptable documents when entering the United States at land and sea ports of entry. A complete list of acceptable documents is available to travelers at ports of entry and is also available at http://travel.state.gov/passport/ppt_card/ppt_card_3926.html (This link will take you to an external website that is not part of the City of Yuma official website.) Travelers who do not present one of these documents may be delayed while U.S. Customs and Border Protection (CBP) officers attempt to verify their identity and citizenship.
For more information, contact United States Customs and Border Protection.
For more information...
United States Customs and Border Protection