Ninth Circuit: USA v. Edwin Mendez

Given the statutory right not to be tried as an adult for crimes committed as a juvenile, denial of the dismissal of a post-majority superseding indictment charging the deft with a different set of crimes is sufficiently final to be the basis of an interlocutory appeal.

Deft's post-majority acts of conspiracy ratified their juvenile acts, enabling them to be charged as an adult, despite the fact that the acts had already been the subject of juvenile proceedings.  The ratification both removed the statutory protections against the transfer to adult proceedings and converted the pre-majority conspiracy to a crime rather than an act of delinquency.

USA v. Edwin Mendez