WASHINGTON, DC - OCTOBER 18: President Barack Obama (R) and First Lady Michelle Obama await the arrival of Italian Prime Minister Matteo Renzi and Agnese Landini on October 18, 2016 in Washington, DC. (Photo by Leigh Vogel/WireImage)

White House Press Secretary Joshua Earnest and Natalie Earnest arrive for a State Dinner in honor of Italian Prime Minister Matteo Renzi and his wife Agnese Landini at the White House October 18, 2016 in Washington, D.C. / AFP / ZACH GIBSON (Photo credit should read ZACH GIBSON/AFP/Getty Images)

Frank Ocean and Katonya Breaux arrive for a State Dinner in honor of Italian Prime Minister Matteo Renzi and his wife Agnese Landini at the White House October 18, 2016 in Washington, D.C. / AFP / ZACH GIBSON (Photo credit should read ZACH GIBSON/AFP/Getty Images)

Singer Gwen Stefani performs during the State Dinner for Italian Prime Minister Matteo Renzi at the White House in Washington on October 18, 2016. / AFP / YURI GRIPAS (Photo credit should read YURI GRIPAS/AFP/Getty Images)

WASHINGTON, DC - OCTOBER 18: U.S. entertainers Gwen Stefani and Blake Shelton (C) and New York Gov, Andrew Cuomo attend a state dinner for Italian Prime Minister Matteo Renzi, hosted by President Barack Obama on the South Lawn of the White House October 18, 2016 in Washington DC. The president and first lady Michelle Obama will tonight host their final state dinner, with singer Gwen Stefani performing. (Photo by Michael Reynolds-Pool/Getty Images)

WASHINGTON, DC - OCTOBER 18: U.S. President Barack Obama offers a toast to Italian Prime Minister Matteo Renzi at a state dinner on the South Lawn of the White House October 18, 2016 in Washington DC. The president and first lady Michelle Obama will tonight host their final state dinner, with singer Gwen Stefani performing. (Photo by Michael Reynolds-Pool/Getty Images)

WASHINGTON, DC - OCTOBER 18: U.S. entertainer Gwen Stefani performs at a state dinner for Italian Prime Minister Matteo Renzi, hosted by President Barack Obama on the South Lawn of the White House October 18, 2016 in Washington DC. The president and first lady Michelle Obama will tonight host their final state dinner. (Photo by Michael Reynolds-Pool/Getty Images)

WASHINGTON, DC - OCTOBER 18: U.S. entertainer Gwen Stefani performs at a state dinner for Italian Prime Minister Matteo Renzi, hosted by President Barack Obama on the South Lawn of the White House October 18, 2016 in Washington DC. The president and first lady Michelle Obama will tonight host their final state dinner. (Photo by Michael Reynolds-Pool/Getty Images)

WASHINGTON, DC - OCTOBER 18: Comedian Jerry Seinfeld and his wife Jessica Seinfeld arrive at the White House for a state dinner October 18, 2016 in Washington, DC. U.S. President Barack Obama is hosting a state dinner for Prime Minister of Italy Matteo Renzi and his wife Agnese Landini. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - OCTOBER 18: President Barack Obama (R) and First Lady Michelle Obama await the arrival of Italian Prime Minister Matteo Renzi and Agnese Landini on October 18, 2016 in Washington, DC. (Photo by Leigh Vogel/WireImage)