Who does Congress work for?

Anyone who has seen School House Rock or the History Channel series "The Presidents" knows who Congress should be working for (us). It seems lately that Congress has changed its employer from the People to the President.

Ever since the inauguration, press conferences are peppered with remarks paraphrased to "The President wants this and we need to do it" or "We have to grant the President's wish for this to happen swiftly". I am positively sure that he is not their boss.

Separate branches of the goverment do not govern other branches. Checks and balances. Congress makes a bill at the behest of the People, their employers. The Supreme Court reviews the constitutionality of it and the President decides whether or not to sign it into law. If the President vetoes it, Congress must answer back with a strong majority to pass the bill and the veto is overridden.

I know there are law students who read this and I ask you: Is this how it really works or is it purely a theoretical set-up?

How many did not want the first bail-out? How many contacted their Congressmen because of it to say nay? Same with the cabinet positions?
A lot, way more than half the population (I'd say about 80% more or less) did not want the veto and Geithner in particular was not wanted by the people.

As employers and apparently share-holders now, don't you think we should take control of our employees or how about lay off a few hundred positions in the Capitol and replace them with more competent applicants?