US President Barack Obama and First Lady Michelle Obama depart during the Congressional Black Caucus Foundation's Phoenix Awards Dinner on September 17, 2016 in Washington, DC. / AFP PHOTO / CHRIS KLEPONISCHRIS KLEPONIS/AFP/Getty Images

US President Barack Obama speaks during the Congressional Black Caucus Foundation's Phoenix Awards Dinner on September 17, 2016 in Washington, DC. / AFP PHOTO / CHRIS KLEPONISCHRIS KLEPONIS/AFP/Getty Images

WASHINGTON, DC - SEPTEMBER 17: A young boy listens to President Barack Obama speaks at the Congressional Black Caucus Foundation's 46th Annual Legislative Conference Phoenix Awards Dinner, September 17 2016, in Washington, DC. (Photo by Olivier Douliery-Pool/Getty Images)

WASHINGTON, DC - SEPTEMBER 17: President Barack Obama speaks to the Congressional Black Caucus Foundation's 46th Annual Legislative Conference Phoenix Awards Dinner, September 17 2016, in Washington, DC. (Photo by Olivier Douliery-Pool/Getty Images)

WASHINGTON, DC - SEPTEMBER 17: President Barack Obama and First Lady Michelle Obama greet guests at the Congressional Black Caucus Foundation's 46th Annual Legislative Conference Phoenix Awards Dinner, September 17 2016, in Washington, DC. (Photo by Olivier Douliery-Pool/Getty Images)

WASHINGTON, DC - SEPTEMBER 15: President Barack Obama speaks to the Congressional Black Caucus Foundation's 46th Annual Legislative Conference Phoenix Awards Dinner, September 17 2016, in Washington, DC. (Photo by Olivier Douliery-Pool/Getty Images)

WASHINGTON, DC - SEPTEMBER 17: President Barack Obama and First Lady Michelle Obama greet guests at the Congressional Black Caucus Foundation's 46th Annual Legislative Conference Phoenix Awards Dinner, September 17 2016, in Washington, DC. (Photo by Olivier Douliery-Pool/Getty Images)

US President Barack Obama and First Lady Michelle Obama arrive on stage during the Congressional Black Caucus Foundation's Phoenix Awards Dinner on September 17, 2016 in Washington, DC. / AFP PHOTO / CHRIS KLEPONISCHRIS KLEPONIS/AFP/Getty Images