The President can have a big impact on the economy in terms of providing confidence or fear of what is going to happen w taxes, inflation, debt, etc.
We are in the WORST recovery since the great depression with no signs of ending because the current makeup of the govt of having an outright marxist tyrant in the WH , and his henchman Reid running the Senate have provided no confidence or incentive to business, domestic or foreign, to invest and take chances.
Companies are just holding on now and will not hire or expand until Obama is gone.