WASHINGTON - President Barack Obama says the U.S. has a quot;moral obligationquot; to help lead the fight against hunger and malnutrition, announcing $3 billion in private sector pledges to help feed Africa#39;s poor.

WASHINGTON -- President Barack Obama is set to announce $3 billion in private sector pledges aimed at alleviating hunger in Africa and urge the world#39;s biggest economies to make good on their own financial promises.

WASHINGTON - President Barack Obama will find his diplomatic clout tested at twin summits on his own turf beginning Friday. The big global problems are the economic mess in Europe and finding scarce money to boost a postwar Afghanistan - and in both cases the solutions lie mostly overseas.

WASHINGTON — President Barack Obama #39;s election-year vagueness on gay marriage is coming under fresh scrutiny.

In this April 20, 2012, file photo Education Secretary Arne Duncan speaks durng the daily news briefing at the White House in Washington. President Barack Obama#39;s vague stance on gay marriage is facing fresh scrutiny.