He is either incredibly uninformed or a liar:

The lack of protection for these tribes from al Qaeda made it clear to these tribes, ‘We have to fight al-Qaeda ourselves’. It wasn’t that the surge brought peace here. It was that the warlords had to create a temporary peace here on their own. And that is because there was no one else there [US soldiers] protecting them!”

What in the world is Schumer talking about? Doesn’t he know that these tribes have been fighting with al-Qaeda against America? Doesn’t he know that they didn’t want protection from al-Qaeda because they were the ally of the tribes. Al-Qaeda was too violent for them, so they switched sides. Even if he doesn’t listen to the briefings, wouldn’t someone on his staff read the newspapers?