Much of the Syria boarder is now the responsibility of the IA. That is the part that the Marines are not defending. There are a number of layers of defense on the Syria boarder, as you are probably awaire (it is in the public domain and not classified).
You are correct we are not attacking the Syrian camps, but I don't know if we are prepared to tackle a war with Syria right now, so border protection is the option that is open.
I wouldn't call that not doing anything....
Correct... Zarqawi's network stems from Bosnia/Kosovo, Turkey, Lebenon, Jordan and Syria to Iraq... he has a straight pipeline that needs to be stopped some where.