As a non-american the last time I saw your government work like a government is when Obama took over from Bush. The GFC was tackled as a bi-partisan issue and I believe what they came up with together averted a 1930's style global depression. There was no finger pointing at that time by senior party members, they put their heads together, listened to expert opinion, and averted a much more serious disaster. Since that time the US economy has bounced back despite the "just say no" attitude of republicans to bipartisan compromise.
Same goes for the Iraq war, sure Obama spoke and voted against it but he was in the minority, even in his own party. That kind of situation or the situation you have now where Democrats are distancing themselves from their own leader is rare in a parliamentary system, in the parliamentary there is an expectation party leaders will demand loyalty as long they have the support of caucus. If they lose that support they can be replaced by their own party without the need for a general election, (as has happened twice here in Oz in the past few years). The only time a parliamentary party acts like a US political party is when the leader allows a "conscience vote", normally "crossing the floor" to vote with the another party is seen as a betrayal and in extreme circumstances will get you kicked out of the party. The British FM famously quit rather than voting with the party to join the Iraq war. In the US politicians are expected to grab as much pork as they can for their state, the national interest and loyalty to party policy don't really count for much in the US system.
As for drones, they're fucking scary in a sci-fi kind of way but they're orders of magnitude less "evil" than what went on in Fallujah under Bush, like it or not the US simply can't afford to ignore the tribal war playing out in Iraq/Syria, the last thing we want is for the tribes to perceive the west as a common enemy. Allowing one tribe to dominate is also a nightmare scenario for the west. So our only practical option is containment and "humanitarian bombing" to avert civilian massacres that any of the tribes may be contemplating. Bombing people back to the dark ages isn't much of a threat to people who want to go back to 700AD anyway.