Jack:
Your intellectual dishonesty is awesome!
Firstly, American law has ample discussion of juveniles being tried as adults. There is reasoning behind this, and much is psychological in nature, and data based. It addresses the depravity involved in the commission of the crime that is beyond modification via maturation. You might be correct that no such principle is found in laws of other countries.
Secondly, your parallel to Kavanaugh is blatantly dishonest. It adopts the narrative that the Dems spun during the hearings, where there was no basis for the claims, and the several on-deck women with accusations were later identified to have been on the take from the Dems. One accuser turned on the tears in the hearing. She seemed articulate, but failed to provide anything that supported both her and Kavanaugh being in the same place at the same time. The @MeToo nonsense that was at high decibel levels was suddenly absent when similar accusations were made against Dems. This two faced garbage is unacceptable.