You're right. I was 15 at the time, would deal with the situation very differently today.

So if I'm following right, the FBI tried to keep you away from a hacker conference and -- I'm inferring here -- because you were a foreigner, and possibly a kid ( no offense meant)?

FBI grabbed me after the hacker conference. Before the con they just searched my room in Vegas and seized my throwaway netbook and phone.

They didn't harass me for being a foreigner or a kid, I suppose they might have let me off easy because of that though.

Why were you targeted in the first place? (Sorry I'm not familiar with you)

If you go up a bit in this thread you'll find other comments discussing this.