"What really is it that draws a young person being raised in the United States to want to go and be at a camp in Yemen and then come back to the United States with the idea of committing harm within the United States?" Napolitano asked without citing specific cases. "Where in that person's formulation is there an opportunity to break that cycle?" 

As a general rule, they just want to TALK about it because they've hit that magical age when pissing off their parents is what they need to do to convince themselves that they are discrete adults. If we were really interested in solving this particular problem (along with a lot of other related problems) we would make the age of majority match the age of biological maturity ...