THE LAW according to the US Constitution-
<< Section 3. Treason against the United States, shall consist only in levying war against them, or in adhering to their enemies, giving them aid and comfort. No person shall be convicted of treason unless on the testimony of two witnesses to the same overt act, or on confession in open court. >>
He did levy War AND adhere with the enemy so he is guilty.
How ever the two witness deal makes it difficult to prove.
He should be Hung However I will be satified just having him rot in a little bitty room.
And for all you "he's just young and confused" sympithizers- Perhaps we should lock his parents in that room as well. If he WAS confused it is only because his praents gave him no direction.