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President Barack Obama and First Lady Michelle Obama wait to welcome Italian Prime Minister Matteo Renzi and his wife Agnese Landini on the North Portico of the White House before the state dinner in Washington on October 18, 2016. / AFP / YURI GRIPAS

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President Barack Obama (R), US First Lady Michelle Obama (2nd-L) welcome Italian Prime Minister Matteo Renzi (2nd-R) and his wife Agnese Landini (L) for the State Dinner at the White House in Washington on October 18, 2016. / AFP / YURI GRIPAS

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Comedian Jerry Seinfeld and his wife Jessica Seinfeld speak to members of the media as they 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)

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President Barack Obama with First Lady Michelle Obama and Italian Prime Minister Matteo Renzi (R) arrive for the State Dinner at the White House in Washington. / AFP / YURI GRIPAS

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President Barack Obama and First Lady Michelle Obama wait for the arrival of Italian Prime Minister Matteo Renzi and his wife Agnese Landini on the North Portico of the White House before a state dinner in Washington, DC. / AFP / Nicholas Kamm

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President Barack Obama and First Lady Michelle Obama wait for the arrival of Italian Prime Minister Matteo Renzi and his wife Agnese Landini on the North Portico of the White House before a state dinner in Washington, DC. / AFP / Nicholas Kamm

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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 hosted their final state dinner. (Photo by Michael Reynolds-Pool/Getty Images)

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Chance the Rapper and Kenneth Bennett 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

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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)

10.

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)