US politics

Republican presidential nominee Donald Trump (L) and Democratic presidential nominee Hillary Clinton greet each other before the first US Presidential Debate at Hofstra University September 26, 2016 in Hempstead, New York

Brendan Smialowski/AFP/Getty Images

Republican presidential nominee Donald Trump (L) and Democratic presidential nominee Hillary Clinton greet each other before the first US Presidential Debate at Hofstra University in Hempstead, New York

A campaigner holds an American flag in front of a 'Stop Trump' open-top double decker bus before touring London to urge Americans living abroad to register and vote, Britain

Stefan Wermuth/Reuters

A campaigner holds an American flag in front of a ‘Stop Trump’ open-top double decker bus before touring London to urge Americans living abroad to register and vote, Britain

U.S. Democratic presidential candidate Hillary Clinton arrives to a press briefing before boarding her campaign plane at the Westchester County airport in White Plains, New York, U.S. September 19, 2016. REUTERS/Carlos Barria

Carlos Barria/Reuters

U.S. Democratic presidential candidate Hillary Clinton arrives to a press briefing before boarding her campaign plane at the Westchester County airport in White Plains, New York

The Washington Monument provides a backdrop as Myanmar's State Counsellor Aung San Suu Kyi is guided by U.S. National Park Service Ranger Heath Mitchell (L) on a visit to the Lincoln Memorial in Washington, U.S. September 14, 2016. REUTERS/Jonathan Ernst     TPX IMAGES OF THE DAY

Jonathan Ernst/Reuters

The Washington Monument provides a backdrop as Myanmar’s State Counsellor Aung San Suu Kyi is guided by U.S. National Park Service Ranger Heath Mitchell on a visit to the Lincoln Memorial in Washington 

Democratic presidential nominee Hillary Clinton listens to a question while speaking to the press at Westchester County Airport September 8, 2016 in White Plains, New York. Clinton Thursday slammed her Republican opponent Donald Trump's recent praise for President Vladimir Putin as "scary." / AFP PHOTO / Brendan SmialowskiBRENDAN SMIALOWSKI/AFP/Getty Images

Brendan Smialowski/AFP/Getty

Democratic presidential nominee Hillary Clinton listens to a question while speaking to the press at Westchester County Airport in White Plains, New York 

U.S. President Barack Obama drinks from a fresh coconut along the banks of the Mekong River in the Luang Prabang, Laos

Carolyn Kaster/AP

US President Barack Obama drinks from a fresh coconut along the banks of the Mekong River in the Luang Prabang, Laos

Republican presidential candidate Donald Trump welcomes Nigel Farage, ex-leader of the British UKIP party, to speak at a campaign rally in Jackson, Miss

Gerald Herbert/AP

Republican presidential candidate Donald Trump welcomes Nigel Farage, ex-leader of the British UKIP party, to speak at a campaign rally in Jackson, Mississippi

A chopper drops fire retardant on the Blue Cut fire, northeast of Los Angeles, California, USA

Paul Buck/EPA

A helicopter drops fire retardant on the Blue Cut fire, northeast of Los Angeles, California, USA

A passerby looks at a statue depicting republican presidential nominee Donald Trump in the nude in San Francisco, United State

Justin Sullivan/Getty Images

A passerby looks at a statue depicting republican presidential nominee Donald Trump in the nude in San Francisco, United States

A supporter of Republican presidential candidate Donald Trump holds up a placard as Trumo delivers remarks during a campaign rally at Silver Spurs Arena, inside the Osceola Heritage Park in Kissimmee, Florida

Gregg Newton/Getty Images

A supporter of Republican presidential candidate Donald Trump holds up a placard as Trumo delivers remarks during a campaign rally at Silver Spurs Arena, inside the Osceola Heritage Park in Kissimmee, Florida

Supporters are seen before Republican U.S. presidential nominee Donald Trump attends a campaign rally at the BB&T Centre in Sunrise, Florida

Eric Thayer/Reuters

Supporters are seen before Republican U.S. presidential nominee Donald Trump attends a campaign rally at the BB&T Centre in Sunrise, Florida

US First Lady Michelle Obama touches the nose of US President Barack Obama before he welcomes Singapore Prime Minister Lee Hsien Loong at the White House on August 2, 2016 in Washington, DC

Brendan Smialowski/AFP Photo

US First Lady Michelle Obama touches the nose of US President Barack Obama before he welcomes Singapore Prime Minister Lee Hsien Loong at the White House in Washington, DC

 A protester stands with his mouth gagged

Patrick T. Fallon/AFP/Getty Images

A protester stands with his mouth gagged with the American flag at a rally of support for former Democratic presidential candidate Bernie Sanders and protest against Hillary Clinton’s nomination during the 2016 Democratic National Convention

***BESTPIX*** PHILADELPHIA, PA - JULY 27:   (Editors Note: Image has been converted to black and white) US President Barack Obama delivers remarks on the third day of the Democratic National Convention at the Wells Fargo Center, July 27, 2016 in Philadelphia, Pennsylvania. Democratic presidential candidate Hillary Clinton received the number of votes needed to secure the party's nomination. An estimated 50,000 people are expected in Philadelphia, including hundreds of protesters and members of the media. The four-day Democratic National Convention kicked off July 25.  (Photo by Win McNamee/Getty Images)

Win McNamee/Getty

US President Barack Obama delivers remarks on the third day of the Democratic National Convention at the Wells Fargo Center in Philadelphia, Pennsylvania. Democratic presidential candidate Hillary Clinton received the number of votes needed to secure the party’s nomination

Workers check on the flag placement on the stage as they prepares for the third day session of the Democratic National Convention in Philadelphia, Wednesday, July 27, 2016. (AP Photo/John Locher)

John Locher/AP

Workers check on the flag placement on the stage as they prepares for the third day session of the Democratic National Convention in Philadelphia 

epa05442919 Delegates react as Democratic Nominee for United States President Hillary Clinton appears live via satellite at the conclusion of the second day of the Democratic National Convention at the Wells Fargo Center in Philadelphia, Pennsylvania, USA, 26 July 2016. The four-day convention is expected to end with Hillary Clinton formally accepting the nomination of the Democratic Party as their presidential candidate in the 2016 election.

Justin Lane/EPA

Delegates react as Democratic Nominee for United States President Hillary Clinton appears live via satellite at the conclusion of the second day of the Democratic National Convention at the Wells Fargo Center in Philadelphia, Pennsylvania, USA 

 Republican presidential candidate Donald Trump addresses delegates at the end of the last day of the Republican National Convention on July 21, 2016, in Cleveland, Ohio

Timothy Clary

Republican presidential candidate Donald Trump addresses delegates at the end of the last day of the Republican National Convention in Cleveland, Ohio

Republican National Convention: Day Three

Chip Somodevilla/Getty Images

A delegates holds signs in support of Republican presidential candidate Donald Trump and Republican vice presidential candidate Mike Pence during the opening of the third day of the Republican National Convention

 A spotlight catches the top of Democratic presidential candidate Hillary Clinton's head, as she enters to address the National Education Association's 95th Representative Assembly in Washington, DC, USA, 05 July 2016. NEA is the largest labor union in the United States.  EPA/MICHAEL REYNOLDS

Michael Reynolds/EPA

A spotlight catches the top of Democratic presidential candidate Hillary Clinton‘s head, as she enters to address the National Education Association’s 95th Representative Assembly in Washington D.C.

An attendee wears socks in support of Hillary Clinton, former Secretary of State and presumptive Democratic presidential nominee, not pictured, ahead of a campaign event in Cincinnati, Ohio, U.S., on Monday, June 27, 2016. Clinton released a new national television ad on Sunday attacking likely Republican rival Donald Trump for his comments on the U.K's decision to leave the European Union, and later warned of the negative impact that "bombastic" behavior can have at times of crisis

Ty Wright/Bloomberg

An attendee wears socks in support of Hillary Clinton, former Secretary of State and presumptive Democratic presidential nominee, not pictured, ahead of a campaign event in Cincinnati, Ohio, U.S.