In this photo taken Jan. 21, 2011 and provided by Harpo Productions Inc., talk-show host Oprah Winfrey, right, poses with first lady Michelle Obama during taping of "The Oprah Winfrey Show" at Harpo Studios in Chicago. The show will air nationally on Thursday, Jan. 27. (AP Photo/Harpo Productions Inc., George Burns) NO SALES
President Barack Obama speaks before offering a toast as he and first lady Michelle Obama, not seen, host China's President Hu Jintao for a State Dinner, Wednesday, Jan. 19, 2011, in the State Dining Room of the White House in Washington. (AP Photo/Carolyn Kaster)
President Barack Obama and first lady Michelle Obama greet China's President Hu Jintao at the Grand Staircase as they arrive for a state dinner at the White House in Washington, Wednesday, Jan. 19, 2011. (AP Photo/Carolyn Kaster)
President Barack Obama and first lady Michelle Obama welcome China's President Hu Jintao to the North Portico of the White House in Washington, Wednesday, Jan. 19, 2011, for the State Dinner. (AP Photo/Carolyn Kaster)
President Barack Obama and first lady Michelle Obama greet China's President Hu Jintao upon his arrival at the North Portico of the White House in Washington, Wednesday, Jan. 19, 2011. (AP Photo/Pablo Martinez Monsivais)
President Barack Obama and first lady Michelle Obama pose with China's President Hu Jintao at the North Portico of the White House in Washington, Wednesday, Jan. 19, 2011. (AP Photo/Pablo Martinez Monsivais)
President Barack Obama speaks before he offers a toast as he and first lady Michelle Obama host China's President Hu Jintao State Dinner, Wednesday, Jan. 19, 2011, in the State Dining Room at the White House in Washington. (AP Photo/Carolyn Kaster)
China's President Hu Jintao speaks before offering a toast during a State Dinner hosted by President Barack Obama and first lady Michelle Obama, Wednesday, Jan. 19, 2011, in the State Dining Room of the White House in Washington. (AP Photo/Carolyn Kaster)
President Barack Obama and China's President Hu Jintao, both standing, and first lady Michelle Obama toast during a State Dinner, Wednesday, Jan. 19, 2011, in the State Dining Room of the White House in Washington. (AP Photo/Carolyn Kaster)
Musician Herbie Hancock arrives in the State Dining Room of the White House in Washington, Wednesday, Jan. 19, 2011, to perform for President Barack Obama, first lady Michelle Obama, China's President Hu Jintao, and guests during a State Visit. (AP Photo/Carolyn Kaster)
Musician Herbie Hancock performs at the piano at the White House in Washington, Wednesday, Jan. 19, 2011, for President Barack Obama, first lady Michelle Obama, China's President Hu Jintao, and guests, during a State Visit. (AP Photo/Carolyn Kaster)
WELCOME: President Obama and first lady Michelle Obama greet Chinese President Hu Jintao on Wednesday before a state dinner for him. The leaders agreed to deals Mr. Obama said are worth $45 billion and 245,000 jobs to the U.S., but human rights and currency manipulation also came up. (Associated Press)
President Obama and first lady Michelle Obama observe the Martin Luther King Jr. Day holiday by participating in a community service project at the Stuart Hobson Middle School in Washington on Monday. They are joined by their daughters, Malia, 12, (right), and Sasha, 9. (Associated Press)
First lady Michelle Obama helps paint a colorful cartoon apple in a student lunchroom at the Stuart Hobson Middle School in Washington as she and President Obama observe the Martin Luther King Jr. Day holiday on Monday, Jan. 17, 2011, by participating in a community service project. (AP Photo/J. Scott Applewhite)
** FILE ** President Obama and first lady Michelle Obama observe the Martin Luther King Jr. Day holiday by participating in a community service project at the Stuart Hobson Middle School in Washington on Monday, Jan. 17, 2011. Mrs. Obama is surprised by everyone singing "Happy Birthday" to her as she arrived; today is her 47th birthday. The Obamas were joined by their daughters, Malia (right), 12, and Sasha, 9, embraced by the first lady. (AP Photo/J. Scott Applewhite)
First lady Michelle Obama hugs astronaut Mark Kelly, husband of Rep. Gabrielle Giffords, during a memorial service for the victims of Saturday's shootings at McKale Center on the University of Arizona campus Wednesday, Jan. 12, 2011, in Tucson, Ariz. (AP Photo/Chris Carlson)
President Obama puts his arm around first lady Michelle Obama near the end of a memorial service in Tucson, Ariz., to honor the victims of a shooting rampage that killed six people and left 14 injured, including Arizona Congresswoman Gabrielle Giffords, on Wednesday, Jan. 12, 2011. (AP Photo/J. Scott Applewhite)
First lady Michelle Obama watches as astronaut Mark Kelly, husband of Rep. Gabrielle Giffords, hugs Homeland Security Secretary Janet Napolitano on Wednesday in Tucson, Ariz., at a memorial service for victims of Saturday's shootings. (Associated Press)
President Obama and first lady Michelle Obama depart after joining government employees on the South Lawn of the White House to observe a moment of silence for victims of shooting rampage in Arizona. (Associated Press)
A television monitor shows President Obama and Michele Obama as he presides over a national moment of silence, while specialists on the trading floor of the New York Stock Exchange observe the occasion for severely injured Arizona Rep. Gabrielle Giffords and the people who were killed during an assassination attempt against her, Monday, Jan. 10, 2011. (AP Photo/Richard Drew)