Business needs to see beyond the fiscal and monetary stimulants that have sustained activity since the global financial crisis. Mr Obama should quickly indicate when taxes will be increased and spending contained.
A second-term president has no need to worry about another election. He has four years to do what he believes to be the right thing for the country. Mr Obama already has a notable achievement in healthcare; his re-election is the endorsement his programme needed and surely puts it beyond further debate. He might dare now to turn to other social problems, particularly those of poor and largely black urban communities lacking employment and family stability.
The symptoms of those problems are drugs and street crime. The election of a black president not once but twice ought to be doing something to reduce the country's racial divide and the fear it generates.
The re-elected President might turn his attention to the proliferation of firearms that have brought more atrocities to the US than the country has suffered from external terrorism.
He might also give greater attention to the Middle East in a second term. He needs to act more decisively against Israeli settlement of the occupied territories and encourage Palestinian factions to unite for resumed negotiations for their own state.
His re-election means US relations with China will be better than they might have been under his rival. Asia and the Pacific are better known to Mr Obama and multilateral trade negotiations towards the Trans-Pacific Partnership will proceed in New Zealand next month.
Continuity in government is usually to be welcomed. President Obama has been given four more years to fulfil the high hopes he once encouraged. He needs to strengthen his team with new appointments and put himself out front more often, giving better leadership to America and the world.