WASHINGTON, DC - SEPTEMBER 16: Democratic presidential nominee former Secretary of State Hillary Clinton greets supporters during the Black Women's Agenda's 29th Annual Symposium on September 16, 2016 in Washington, DC. Clinton is back on the trail and campaigning in D.C. after taking some time off to recover from pneumonia. (Photo by Justin Sullivan/Getty Images)

WASHINGTON, DC - SEPTEMBER 16: Democratic presidential nominee former Secretary of State Hillary Clinton greets supporters during the Black Women's Agenda's 29th Annual Symposium on September 16, 2016 in Washington, DC. Clinton is back on the trail and campaigning in D.C. after taking some time off to recover from pneumonia. (Photo by Justin Sullivan/Getty Images)

WASHINGTON, DC - SEPTEMBER 16: Democratic presidential nominee former Secretary of State Hillary Clinton speaks during the Black Women's Agenda's 29th Annual Symposium on September 16, 2016 in Washington, DC. Clinton is back on the trail and campaigning in D.C. after taking some time off to recover from pneumonia. (Photo by Justin Sullivan/Getty Images)

WASHINGTON, DC - SEPTEMBER 16: Democratic presidential nominee former Secretary of State Hillary Clinton speaks during the Black Women's Agenda's 29th Annual Symposium on September 16, 2016 in Washington, DC. Clinton is back on the trail and campaigning in D.C. after taking some time off to recover from pneumonia. (Photo by Justin Sullivan/Getty Images)

WASHINGTON, DC - SEPTEMBER 16: Democratic presidential nominee former Secretary of State Hillary Clinton speaks during the Black Women's Agenda's 29th Annual Symposium on September 16, 2016 in Washington, DC. Clinton is back on the trail and campaigning in D.C. after taking some time off to recover from pneumonia. (Photo by Justin Sullivan/Getty Images)

WASHINGTON, DC - SEPTEMBER 16: Democratic presidential nominee former Secretary of State Hillary Clinton greets supporters during the Black Women's Agenda's 29th Annual Symposium on September 16, 2016 in Washington, DC. Clinton is back on the trail and campaigning in D.C. after taking some time off to recover from pneumonia. (Photo by Justin Sullivan/Getty Images)

WASHINGTON, DC - SEPTEMBER 16: A supporter looks on as democratic presidential nominee former Secretary of State Hillary Clinton speaks during the Black Women's Agenda's 29th Annual Symposium on September 16, 2016 in Washington, DC. Clinton is back on the trail and campaigning in D.C. after taking some time off to recover from pneumonia. (Photo by Justin Sullivan/Getty Images)

WASHINGTON, DC - SEPTEMBER 16: Attendees look on as democratic presidential nominee former Secretary of State Hillary Clinton speaks during the Black Women's Agenda's 29th Annual Symposium on September 16, 2016 in Washington, DC. Clinton is back on the trail and campaigning in D.C. after taking some time off to recover from pneumonia. (Photo by Justin Sullivan/Getty Images)