Democratic presidential candidate Hillary Clinton waits to be introduced before speaking at the Des Moines Area Community College in Ankeny, Iowa, on Wednesday, August 26.
White House guests have their hair blown back while they watch President Barack Obama depart in his Marine One helicopter on Thursday, August 27.
Former President George W. Bush dances with Alexina Medley, the principal of Warren Easton High School in New Orleans, on Friday, August 28. Bush's visit came as the city prepared to mark the 10th anniversary of Hurricane Katrina.
New Jersey Gov. Chris Christie, a Republican presidential candidate, expresses his opposition to Obama's Iran deal while speaking at a Chabad house Tuesday, August 25, in New Brunswick, New Jersey.
A security official pushes away an environmental activist Tuesday, August 25, near the Washington house of U.S. Secretary of State John Kerry. The protesters were urging Kerry to stop the expansion of the Alberta Clipper oil pipeline.
Wisconsin Gov. Scott Walker, a Republican presidential candidate, speaks during a meet-and-greet in Guthrie Center, Iowa, on Thursday, August 27.
Supporters cheer for U.S. Sen. Ted Cruz, a Texas Republican running for President, during an event in Anderson, South Carolina, on Monday, August 24.
U.S. Sen. Bernie Sanders, a Democratic presidential candidate from Vermont, greets audience members after a town-hall meeting in Conway, New Hampshire, on Monday, August 24.
President Obama greets residents in the Treme neighborhood of New Orleans on Thursday, August 27. It has been 10 years since Hurricane Katrina devastated the historically black neighborhood.
Republican presidential candidate Jeb Bush addresses an audience in Pensacola, Florida, on Wednesday, August 26.
Democratic presidential candidate Martin O'Malley, left, leaves a public library in Muscatine, Iowa, after speaking there on Sunday, August 23.
Republican presidential candidate Ben Carson, left, poses for a selfie in Little Rock, Arkansas, on Thursday, August 27.
President Obama sits inside Marine One at Andrews Air Force Base in Maryland on Tuesday, August 25.