Why are Congress' approval numbers so low?

Glenn Greenwald puts to the lie that "Americans don't want Congress to do investigations"

This reflects something I've been repeating for some time. The President has very low approval ratings because he's been godawful. Congress has very low approval ratings because they continue to pull their punches.

As much as I dislike the way the "progressives" have turned themselves into Republican-lite in their methods, they are exactly right (and were ahead of the curve) on their calls for Congressional investigations of this Administration, pulling out of Iraq, and in general rolling back the additional powers the President gained after 9/11.

Congress simply isn't doing the will of the people. And their numbers reflect the disappointment that many have with them over the point. Dems are squandering their advantage, and continuing to roll over for the President (such as the most recent expansion of his spying powers) will nail them to the wall.