The 2008 meltdown created a three trillion dollar hole in the economy. Obama tried plugging it with a less than one trillion stimulus. We're also facing massive unemployment, something that's a legacy of the 2008 meltdown and that can't really be blamed on Obama. We're also facing a consumer strike, as consumers (consumer spending is 70% of GDP) cut spending as their equity (house, stockls) is shot to bits and they don't know if they'll be in employment next month.
So there's really not a lot he can do. Further stimulus is off the table due to the GOP, consumers aren't going to feel like spending until they've reduced their debt and feel secure in their jobs and the economy in general. It's going to take a long time for things to get better, and it doesn't look like they will anytime soon.
There is more to it than that. The baby boomers, who make up almost 30% of the population, stopped buying. All these years, the baby boomers drove the economy with their purchases of bigger and bigger homes, more cars, nicer cars, and every new gadget that was ever produced. They purchased these things for themselves and many things for their kids. Now they are selling those big homes and downsizing. Many have retired, and the ones who have not are saving for retirement. They don't need a million new things, so they stopped purchasing which has decreased demand for many products.
Where the even bigger problem comes into play, is that the kids of these baby boomers have headed off to college. Now they should begin making all these purchases as they start their families and follow in their parent's footsteps. But their is one problem. Unlike their parents, who went to college, and pretty much made it through college with only small amounts of debt, these kids are coming out of college with massive amounts of debt. And this debt burden that they face is stopping them from buying things like new cars, big fancy houses, or any houses at all. They just can't afford it. And since their parents are not buying anything, and they can't afford to buy anything, there is little demand for all the products and services that American businesses produce, which leads us to a lack of demand and little need to hire more people.
I know this entire concept is a bit complex, and most here will just say that the reason the economy continues to stall is that it's all government's fault for creating too many regulations and spending too much taxpayer money and overtaxing everyone. But hey, believe what you want. Keep cutting taxes and spending and cut as many regulations as you want. Good luck with that working too.