What has Obama done to save the middle class?

Obama has started campaigning and his big thing is how we have to save the middle class. He's been in charge for 4 years now. Are you better off than you were four years ago?

Here's an article on how Obama's policies have hurt the middle class: http://bit.ly/xll41d

Obama uses an interventionist policy.

Here's an excerpt from the article: "Health-care interventionism distorts the price mechanism that allows doctors and patients to negotiate the costs of various treatments. More interventionism inevitably results in an increase in health-care costs, which in turn means fewer people who can afford private health insurance. Interventionists then decide that we need more regulation. This is the vicious circle of regulation. As Mises explained, when regulations make problems worse, more regulations are passed to make up for the harm caused. Interventionists typically capitalize on perceived market failures, and then deceive an unsuspecting public into believing in the inadequacy of the market and pressing for more regulation."

Do you think Obama has hurt the middle class or is he helping it - and how?