Mister Obama has dealt with many issues since becoming the nation's first African-American president on January twentieth.

VOA: special.2009.05.02

In nineteen forty-two, Mister Oppenheimer joined the American government's project to develop the atomic bomb.

VOA: special.2009.06.14

Mister Kennedy was one of the nation's longest-serving and most respected senators.

VOA: special.2010.01.02