Actor Tom Hanks attends the unveiling of the official portraits of former President Barack Obama and first lady Michelle at the National Portrait Gallery , February 12, 2018 in Washington, DC. Photo by Olivier Douliery/Abaca Press

Former President Barack Obama, looks at former first lady Michelle Obama's official portrait at the Smithsonian's National Portrait Gallery, Monday, Feb. 12, 2018, in Washington. (AP Photo/Andrew Harnik)

Former President Barack Obama stands in front of his official portrait by Artist Kehinde Wiley at its unveiling at the Smithsonian's National Portrait Gallery, Monday, Feb. 12, 2018, in Washington. (AP Photo/Andrew Harnik)

Former President Barack Obama, center, stands on stage during the unveiling of the Obama's official portraits at the Smithsonian's National Portrait Gallery, Monday, Feb. 12, 2018, in Washington. (AP Photo/Andrew Harnik)

Former President Barack Obama, speaks at the unveiling ceremony for the Obama's official portraits at the Smithsonian's National Portrait Gallery, Monday, Feb. 12, 2018, in Washington. Obama's portrait was painted by Artist Kehinde Wiley. (AP Photo/Andrew Harnik)

Former US President Barack Obama unveils his portrait alongside the portrait's artist, Kehinde Wiley, at the Smithsonian's National Portrait Gallery in Washington, DC, February 12, 2018. / AFP PHOTO / SAUL LOEB

Former US President Barack Obama stands before portraits of himself and wife, former US First Lady Michelle Obama (R) during the unveilings at the Smithsonian's National Portrait Gallery in Washington, DC, February 12, 2018. / AFP PHOTO / SAUL LOEB

Former US President Barack Obama stands before his portrait as it is unveiled at the Smithsonian's National Portrait Gallery in Washington, DC, February 12, 2018. / AFP PHOTO / SAUL LOEB / RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION - TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

Former US President Barack Obama stands before his portrait by artist Kehinde Wiley after its unveiling at the Smithsonian's National Portrait Gallery in Washington, DC, February 12, 2018. / AFP PHOTO / SAUL LOEB / RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION - TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

Former US President Barack Obama looks at a portrait of his wife, former First Lady Michelle Obama by artist Amy Sherald after it was unveiled at the Smithsonian's National Portrait Gallery in Washington, DC, February 12, 2018. / AFP PHOTO / SAUL LOEB / RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION - TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

Former President Barack Obama speaks during the unveiling of his official portrait at the National Portrait Gallery , February 12, 2018 in Washington, DC. Photo by Olivier Douliery/Abaca Press

Former President Barack Obama with artist Kehinde Wileyhe, unveils his official portrait at the National Portrait Gallery , February 12, 2018 in Washington, DC. Photo by Olivier Douliery/Abaca Press

Former President Barack Obama takes a look at Former First Lady Michelle Obama official portrait at the National Portrait Gallery , February 12, 2018 in Washington, DC. Photo by Olivier Douliery/Abaca Press

Former President Barack Obama with artist Kehinde Wileyhe, unveils his official portrait at the National Portrait Gallery , February 12, 2018 in Washington, DC. Photo by Olivier Douliery/Abaca Press

Former first lady Michelle Obama and Artist Amy Sherald, right, unveil Michelle Obama's official portrait at the Smithsonian's National Portrait Gallery, Monday, Feb. 12, 2018, in Washington. (AP Photo/Andrew Harnik)

Former US First Lady Michelle Obama and her portrait's artist, Amy Sherald (R) unveil her portrait at the Smithsonian's National Portrait Gallery in Washington, DC, February 12, 2018. / AFP PHOTO / SAUL LOEB

Former US First Lady Michelle Obama unveils her portrait at the Smithsonian's National Portrait Gallery in Washington, DC, February 12, 2018. / AFP PHOTO / SAUL LOEB

Former US First Lady Michelle Obama stands before her portrait by artist Amy Sherald after an unveiling at the Smithsonian's National Portrait Gallery in Washington, DC, February 12, 2018. / AFP PHOTO / SAUL LOEB / RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION - TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

Former First Lady Michelle Obama speaks before unveiling her official portrait at the National Portrait Gallery , February 12, 2018 in Washington, DC. Photo by Olivier Douliery/Abaca Press

Former First Lady Michelle Obama with Artist Amy Sherald unveils her official portrait at the National Portrait Gallery , February 12, 2018 in Washington, DC. Photo by Olivier Douliery/Abaca Press

Former US President Barack Obama and First Lady Michelle Obama stand beside their portraits after their unveiling at the Smithsonian's National Portrait Gallery in Washington, DC, February 12, 2018. / AFP PHOTO / SAUL LOEB

Former First Lady Michelle Obama and former President Barack Obama pose with Artists Kehinde Wiley and Amy Sherald during the unveiling of their official portraits at the National Portrait Gallery , February 12, 2018 in Washington, DC. Photo by Olivier Douliery/Abaca Press

Former President Barack Obama and First Lady Michelle Obama attend the unveiling of their official portraits at the National Portrait Gallery , February 12, 2018 in Washington, DC. Photo by Olivier Douliery/Abaca Press

Filmmaker Steven Spielberg attends the unveiling of the official portraits of former President Barack Obama and first lady Michelle at the National Portrait Gallery , February 12, 2018 in Washington, DC. Photo by Olivier Douliery/Abaca Press

Filmmaker Steven Spielberg and her wife Kate Capshaw attend the unveiling of the official portraits of former President Barack Obama and first lady Michelle at the National Portrait Gallery , February 12, 2018 in Washington, DC. Photo by Olivier Douliery/Abaca Press

unveiling of the official portraits of former President Barack Obama and first lady Michelle at the National Portrait Gallery , February 12, 2018 in Washington, DC. Photo by Olivier Douliery/Abaca Press

The official portrait of former President Barack Obama at the National Portrait Gallery , February 12, 2018 in Washington, DC. Photo by Olivier Douliery/Abaca Press

Former First Lady Michelle Obama 's official portrait at the National Portrait Gallery , February 12, 2018 in Washington, DC. Photo by Olivier Douliery/Abaca Press