fun one:

the Convention on the Rights of the Child, the most comprehensive human rights treaty on children’s rights and notably the most widely ratified treaty since its introduction over 25 years ago. The treaty has been ratified by every country with one notable exception — the United States

and why would they be the last hold out?

The most obvious arena in which the United States denies children their human rights —and their childhood — is the criminal justice system, which American children encounter far too early and with devastating consequences. From a young age, many children — particularly students of color and those with disabilities — are funneled out of the schoolroom and into prison for childhood behavior. Children as young as six years old have been removed from the classroom in handcuffs for throwing temper tantrums. Others have been arrested for engaging in a tug-of-war with a teacher or doodling on a desk.