US politics

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.

Republican presidential candidate Donald Trump waves as he arrives at his Turnberry golf course, in Turnberry, Scotland, Britain June 24, 2016.      REUTERS/Clodagh Kilcoyne

Clodagh Kilcoyne/Reuters

Republican presidential candidate Donald Trump waves as he arrives at his Turnberry golf course, in Turnberry, Scotland, Britain

A well-wisher holding a banner touches the hearse carrying the remains of Muhammad Ali during the funeral procession for the three-time heavyweight boxing champion in Louisville, Kentucky, U.S., June 10, 2016.   REUTERS/Adrees Latif

Adrees Latif/Reuters

A well-wisher holding a banner touches the hearse carrying the remains of Muhammad Ali during the funeral procession for the three-time heavyweight boxing champion in Louisville, Kentucky, U.S

WASHINGTON, DC - JUNE 09: (EDITORS NOTE: Retransmission with alternate crop.)   Democratic presidential candidate Sen. Bernie Sanders (D-VT) (L) walks with President Barack Obama (R) through the Colonnade as he arrives at the White House for an Oval Office meeting June 9, 2016 in Washington, DC. Sanders met with President Obama after Hillary Clinton has clinched the Democratic nomination for president. (Photo by Alex Wong/Getty Images)

Alex Wong/Getty

Democratic presidential candidate Sen. Bernie Sanders walks with President Barack Obama through the Colonnade as he arrives at the White House for an Oval Office. Sanders met with President Obama after Hillary Clinton has clinched the Democratic nomination for president

SANTA MONICA, CA - JUNE 07: A man holds a sign at the California primary election night rally for Democratic presidential candidate Senator Bernie Sanders (D-VT) on June 7, 2016 in Santa Monica, California. Hillary Clinton held an early lead in today's California primary.  (Photo by David McNew/Getty Images)

David McNew/Getty

A man holds a sign at the California primary election night rally for Democratic presidential candidate Senator Bernie Sanders (D-VT) in Santa Monica, California

TOPSHOT - US First Lady Michelle Obama cheers during the White House Turnaround Arts Talent Show at the White House May 25, 2016 in Washington, DC.  Students from throughout the US performed at the presidential mansion showcasing the power of arts education.  / AFP PHOTO / Brendan SmialowskiBRENDAN SMIALOWSKI/AFP/Getty Images

Brendan Smialowski/AFP/Getty

US First Lady Michelle Obama cheers during the White House Turnaround Arts Talent Show at the White House in Washington D.C. Students from throughout the US performed at the presidential mansion showcasing the power of arts education 

Orange County Sheriff's deputies take a protester into custody outside the Anaheim Convention Center where Republican presidential candidate Donald Trump held a rally

Jae C. Hong

Orange County Sheriff’s deputies take a protester into custody outside the Anaheim Convention Center where Republican presidential candidate Donald Trump held a rally