I understand there is no open border and that all adults must have a passport or passport card to cross the border. The part I don’t understand though is if children under the age of 16 are required to have that. This customs and border‘s website (https:/…your-trip) says a birth certiciate is sufficient for children, as do other people I have talked to. But all passport agency employees I’ve talk to locally and nationally, tell me that is not true. Can someone verify to me if children can cross the border by car with a copy of their birth certificate?