That's why we say that Obama inherited a rapidly-increasing unemployment rate. Why did it continue to rise after Obama took office? It takes a while for any government policy to take effect. Both TARP, the bank bailout signed by Bush in late 2008, and ARRA, the stimulus signed by Obama in February 2009, needed time to take effect, and that simply did not happen immediately. How long does it take to turn around the proverbial aircraft carrier vs. a speed boat? However, even though it took 9 months for the unemployment rate to max out (see the graph above) and start decreasing, the rate of increase slowed down by June 2009.
We can also think of the analogy of a fire: If a building is burning down, the fire department is called. It takes time for the fire department to put out the fire; it takes time for the fire to cool; it takes times for the debris to be hauled away. Only then can rebuilding start. And you certainly don't blame the fire department or the people who clean up the debris for the fire, do you?
The question, "What Caused the Rise in the Unemployment Rate After Obama Took Office?" really makes no sense...
The unemployment rate was rising rapidly before Obama took office, and it took a few months for policies to kick in and stem the job bloodbath. A better question would be "What Caused the Rise in the Unemployment Rate Starting in 2007?" The answer to that would be the housing crisis and the resulting crisis in banks and lending institutions. But that is outside the scope of this article.
Molly's Middle America: What Was the Unemployment Rate When Obama Took Office Compared to Now? (October 2012 update)