AS OF JUNE 1st 2009 EFFECTIVE FOR 2010 EDITION When teams will cross the border, only adults are required to provide a passport to the custom. Here is information taken on the US Government web site: “CHILDREN: U.S. citizen children under the age of 16 will be able to present the original or copy of their birth certificate, or other proof of citizenship such as a naturalization certificate or citizenship card. Groups of U.S. citizen children ages 16 through 18 (under 19), when traveling with a school or religious group, social organization, or sports team, will be able to enter under adult supervision with originals or copies of their birth certificates or other proof of citizenship.” See information on US Government web site: US Travel State Government Web Site