The main purpose of this legislation is to enhance the protection of minors who accompany adults entering the United States. It aims to prevent child trafficking and ensure that children are not being exploited by individuals who falsely claim to be their relatives or guardians. Key provisions of the law require that any adult (18 years or older) who wishes to enter the U.S. with a minor must prove their familial relationship. This can be done by presenting documents that establish their relationship or by providing a witness testimony.