As a president, Obama has done what he thinks is best, he has made economic recovery, so the value of the American dollar is not less than the euro currency, but on the other hand, Obama's foreign policy, made other countries, especially developing countries increasingly depressed, especially with the issue of terrorism in all parts of the world. Hopefully Obama made a policy that will improve the welfare of the people, and still maintain a good relationship between the state 
What he thinks is best, and what is best for the economy are not the same thing. Obama has implemented liberal policy after liberal policy which has caused the economic recovery to be much weaker then most economic recoveries, and much weaker then it should be based on how bad the recession was. I'm no Obama supporter but this was no normal recession. Were talking Great Depression magnitude here
No economy is gonna recover that easily from a market crash like that