WASHINGTON, DC - SEPTEMBER 22: U.S. President Barack Obama (2nd R) presents the National Humanities Medal to author Louis Menand (L) during an East Room ceremony at the White House September 22, 2016 in Washington, DC. President Obama awarded the 2015 National Medal of Arts and the National Humanities Medal to recipients in the annual ceremony. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - SEPTEMBER 22: U.S. President Barack Obama (R) presents the National Humanities Medal to chef and entrepreneur Jose Andres (L) during an East Room ceremony at the White House September 22, 2016 in Washington, DC. President Obama awarded the 2015 National Medal of Arts and the National Humanities Medal to recipients in the annual ceremony. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - SEPTEMBER 22: U.S. President Barack Obama (R) presents the National Humanities Medal to poet Louise Gluck (L) during an East Room ceremony at the White House September 22, 2016 in Washington, DC. President Obama awarded the 2015 National Medal of Arts and the National Humanities Medal to recipients in the annual ceremony. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - SEPTEMBER 22: U.S. President Barack Obama (R) presents the National Humanities Medal to author Ron Chernow (L) during an East Room ceremony at the White House September 22, 2016 in Washington, DC. President Obama awarded the 2015 National Medal of Arts and the National Humanities Medal to recipients in the annual ceremony. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - SEPTEMBER 22: U.S. President Barack Obama (2nd R) presents the National Humanities Medal to physician Abraham Verghese (L) during an East Room ceremony at the White House September 22, 2016 in Washington, DC. President Obama awarded the 2015 National Medal of Arts and the National Humanities Medal to recipients in the annual ceremony. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - SEPTEMBER 22: U.S. President Barack Obama (R) presents the National Medal of Arts to dancer Ralph Lemon (L) during an East Room ceremony at the White House September 22, 2016 in Washington, DC. President Obama awarded the 2015 National Medal of Arts and the National Humanities Medal to recipients in the annual ceremony. (Photo by Alex Wong/Getty Images) *** BESTPIX ***

US President Barack Obama shakes hands with photographer Chuck Close as he leaves following the 2015 National Medal of Arts and 2015 National Humanities Medals ceremony in the East Room of the White House in Washington, DC, September 22, 2016. / AFP PHOTO / SAUL LOEBSAUL LOEB/AFP/Getty Images

Comedian Mel Brooks leaves after receiving the 2015 National Medal of Arts during a ceremony hosted by US President Barack Obama in the East Room of the White House in Washington, DC, September 22, 2016. / AFP PHOTO / SAUL LOEBSAUL LOEB/AFP/Getty Images