First lady Michelle Obama speaks during a rally at the VFW Post 1503 on Thursday, June 7, 2012 in Dale City, Virginia. Obama met with campaign supporters as the Democratic party works to attract women voters, viewed as a vital independent voting bloc for her husband, President Barack Obama, in November's election.
First lady Michelle Obama addressed soldiers Wednesday, December 14, 2011, at Fort Bragg in North Carolina. The president and first lady Michelle Obama thanked the troops for their service in Iraq, marking the fulfillment of a campaign promise to bring home all U.S. forces following a nearly nine-year conflict. (Travis Long/
Raleigh News & Observer/MCT
First lady Michelle Obama greets military children at the White House Christmas display on Nov. 30, 2011.
First lady Michelle Obama laughs with Chicago Mayor Rahm Emanuel during an appearance at a South Side Walgreens on Tuesday, October 25, 2011, in Chicago, Illinois. Mrs. Obama discussed the need for more access to healthy, affordable food as a key to solving childhood obesity. (Terrence Antonio James/)
First lady Michelle Obama campaigns for Senator Russ Feingold (D-Wis.) during a fund raising luncheon at the U.S. Cellular Arena in Milwaukee, Wisconsin, Wednesday, October 13, 2010. (Gary Porter/Milwaukee Journal Sentinel/MCT)
Milwaukee Journal Sentinel/MCT
First lady Michelle Obama spoke about childhood obesity on Monday, July 12, 2010, at the 101st annual NAACP convention at Bartle Hall in Kansas City, Missouri. (Keith Myers/Kansas City Star/MCT)
Kansas City Star/MCT
First lady Michelle Obama arrives to make an announcement about the Let's Move! Childhood obesity campaign on Monday, May 17, 2010 in Washington, D.C. (Olivier Douliery/Abaca Press/MCT)
First Lady Michelle Obama speaks at an event to announce an ambitious national goal of solving the challenge of childhood obesity within a generation so that children born today will reach adulthood at a healthy weight and unveiled a nationwide campaign, Tuesday, February 9, 2010 in Washington, D.C. (Olivier Douliery/Abaca Press/MCT)
Michelle Obama, wife of Democratic presidential candidate Sen. Barack Obama, speaks during a campaign rally at Macalester College in St. Paul, Minnesota, Monday, October 13, 2008. (Jeff Wheeler/Minneapolis Star Tribune/MCT)
Minneapolis Star Tribune/MCT
Democratic presidential candidate Sen. Barack Obama and his wife, Michelle, acknowledge the crowd as they take the stage for an election night rally at the Xcel Energy Center on Tuesday, June 3, 2008, in St. Paul, Minnesota. (Renee Jones Schneider/Minneapolis Star Tribune/MCT)
Minneapolis Star Tribune/MCT
First lady Michelle Obama makes her way onto the stage during a mentoring rally held at Tom Adams Field on the campus of Wayne State University in Detroit, Michigan, Wednesday, May 26, 2010. (Andre J. Jackson/Detroit Free Press/MCT)
Detroit Free Press/MCT
Michelle Obama, wife of Democratic presidential candidate Barack Obama, addresses a crowd of more than 900 supporters at Ovens Auditorium in Charlotte, North Carolina, Monday, May 5, 2008.
Democratic presidential hopeful Sen. Barack Obama and wife Michelle, center, greet supporters outside Major League Cuts Barber Shop during a campaign stop, Tuesday, April 22, 2008, in Philadelphia.
Michelle Obama, wife of Democratic presidential candidate Sen. Barack Obama, stopped for some personal pictures with supporters after a roundtable discussion on Thursday, July 10, 2008, on the campus of the University of Missouri-Kansas City in Kansas City, Missouri.
MCT/Kansas City Star