Baltimore mother Toya Graham who famously waded into a riot to retrieve her son Michael Singleton (L) stands with him after they joined U.S. President Barack Obama in a televised town hall about trust and safety in our communities in Washington July 14, 2016. REUTERS/Kevin Lamarque/File Photo

Republican U.S. presidential nominee Donald Trump holds a campaign rally at the ?Ziegler Building at the Washington County Fair Park & Conference Center in West Bend, Wisconsin August 16, 2016. REUTERS/Eric Thayer

(FILES) This file photo taken on August 12, 2016 shows Rwandan President Paul Kagame (L) and Democratic Republic of the Congo's President Joseph Kabila (C) talking at the Rwanda-DRC border in Rubavu after concluding bilateral discussions. The United States warns of further violence in the already war-wracked Democratic Republic of Congo should President Joseph Kabila hold on to power after his mandate expires in December. Kinshasa, meanwhile, speaks of "chaos" if foreign countries meddle in the crisis. For months, Washington has kept a close eye on the DRC, where tensions are running high ahead of the December 20 deadline for the end of the president's second term. He is barred from running again under the constitution. / AFP PHOTO / CYRIL NDEGEYACYRIL NDEGEYA/AFP/Getty Images

Republican U.S. presidential nominee Donald Trump holds a campaign rally at the ​Ziegler Building at the Washington County Fair Park & Conference Center in West Bend, Wisconsin August 16, 2016. REUTERS/Eric Thayer

Republican U.S. presidential nominee Donald Trump holds a campaign rally at the ​Ziegler Building at the Washington County Fair Park & Conference Center in West Bend, Wisconsin August 16, 2016. REUTERS/Eric Thayer

Republican U.S. presidential nominee Donald Trump holds a campaign rally at the ​Ziegler Building at the Washington County Fair Park & Conference Center in West Bend, Wisconsin August 16, 2016. REUTERS/Eric Thayer

Republican U.S. presidential nominee Donald Trump holds a campaign rally at the ​Ziegler Building at the Washington County Fair Park & Conference Center in West Bend, Wisconsin August 16, 2016. REUTERS/Eric Thayer/File Photo

FILE - European IOC Chief Patrick Hickey Arrested in Rio WASHINGTON, DC - OCTOBER 29: ANOC Senior Vice President Patrick Hickey (L) and IOC President Thomas Bach confer at the The XX ANOC General Assembly 2015 at the Hilton Hotel on October 29, 2015 in Washington, DC. (Photo by Larry French/Getty Images for ANOC)