Effective June1, 2009, US Citizens traveling by land or sea will need to present the following to enter or depart the United States:

• Ages 19 and older: traveling to Mexico will need to show a Passport for reentry into the United States.
• Children children under age 16 and children age and children 16 to 18 traveling in groups to Mexico will be required to present original or a certified copy of their birth certificate for reentry into the United States.

For additional information for travel by car from Mexico to the US, please check Homeland Security’s Web Site.