america

Travelers walk through terminal 3 at O'Hare International Airport in Chicago, Wednesday, Nov. 23, 2016. While driving remains the most popular form of transportation Thanksgiving travelers take, AAA expects just under 4 million people to fly to their holiday destinations. (AP Photo/Nam Y. Huh)

Nam Y. Huh/AP

Travellers walk through terminal 3 at O’Hare International Airport in Chicago. While driving remains the most popular form of transportation Thanksgiving travellers take, AAA expects just under 4 million people to fly to their holiday destinations. Photo Nam Y. Huh/AP 

Protesters gather in front of a campaign office for Republican presidential candidate Donald Trump in Philadelphia, Tuesday, Oct. 18, 2016. (AP Photo/Matt Rourke)

Matt Rourke/AP

Protesters gather in front of a campaign office for Republican presidential candidate Donald Trump in Philadelphia. Photo Matt Rourke/AP. 

gAn attendee gives the thumbs up while wearing a Donald Trump mask during a campaign event for Donald Trump, 2016 Republican presidential nominee, in Cincinnati, Ohio, U.S., on Thursday, Oct. 13, 2016. Trump rebuffed political aides' requests to research his past, people familiar with the matter said, a decision that contributed to his campaign being caught unprepared for the past week's barrage of claims he mistreated women. Photographer: Luke Sharrett/Bloomberg

Luke Sharrett/Bloomberg

An attendee gives the thumbs up while wearing a Donald Trump mask during a campaign event for Donald Trump, 2016 Republican presidential nominee. Photo Luke Sharrett/Bloomberg 

 A man begs for money as he displays a placard during the second presidential debate Times Square in New York on October 9, 2016. / AFP PHOTO / KENA BETANCURKENA BETANCUR/AFP/Getty Images

Kena Betancur/AFP/Getty

A man begs for money as he displays a placard in Times Square in New York. Photo Kena Betancur/AFP/Getty 

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 

An aerial view of the Statue of Liberty, September 8, 2016 in New York City. New York City is preparing to mark the 15th anniversary of the September 11 terrorist attacks. (Photo by Drew Angerer/Getty Images)

Drew Angerer/Getty

An aerial view of the Statue of Liberty. New York City is preparing to mark the 15th anniversary of the September 11 terrorist attacks

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 

BATON ROUGE, LA - JULY 15:  The body of Alton Sterling, who was shot and killed by Baton Rouge Police officers, lies in a casket as he is brought into his funeral at Southern University on July 15, 2016 in Baton Rouge, Louisiana.  (Photo by Sean Gardner/Getty Images)

Sean Gardner/Getty

The body of Alton Sterling, who was shot and killed by Baton Rouge Police officers, lies in a casket as he is brought into his funeral at Southern University in Baton Rouge, Louisiana 

A woman stands by a makeshift memorial at the Triple S convenience store where Alton Sterling was shot dead by police in Baton Rouge, Louisiana, U.S., July 11, 2016. REUTERS/Shannon Stapleton

Shannon Stapleton/Reuters

A woman stands by a makeshift memorial at the Triple S convenience store where Alton Sterling was shot dead by police in Baton Rouge in Louisiana

Jeff Lawson, (C) Founder, CEO, & Chairman of Communications software provider Twilio Inc., takes a selfie photo during his company's IPO on the floor of the New York Stock Exchange (NYSE) in New York City, U.S., June 23, 2016. REUTERS/Brendan McDermid

Brendan McDermid/Reuters

Jeff Lawson, (C) Founder, CEO, & Chairman of Communications software provider Twilio Inc., takes a selfie photo during his company’s IPO on the floor of the New York Stock Exchange (NYSE) in New York City

epa05381363 A Fairfax County police officer outside the headquarters of the National Rifle Association (NRA) beneath a paper heart inscribed with the name of a victim of the Orlando shooting massacre in Fairfax, VA, USA, 21 June 2016. On 20 June, the US Senate failed to pass four gun control amendments in the wake of the largest mass shooting in US history.  EPA/JIM LO SCALZO

Jim Lo Scalzo/EPA

A paper heart inscribed with the name of a victim of the Orlando shooting massacre in Fairfax obscures the face of a Fairfax County police officer outside the headquarters of the National Rifle Association (NRA)

Runners pass under the the flags flying at half-staff around the Washington Monument at daybreak in Washington, Monday, June 13, 2016. The flags were ordered to half-staff by President Barack Obama to honor the victims of the Orlando nightclub shootings. (AP Photo/J. David Ake)

David Ake/AP

Runners pass under the the flags flying at half-mast around the Washington Monument at daybreak in Washington. The flags were ordered to half-staff by President Barack Obama to honor the victims of the Orlando nightclub shootings 

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

Lightning from a severe storm fills the sky behind a grain elevator in Belvue, Kan., Wednesday, May 25, 2016. The storm produced tornadoes near Chapman, Kan. (AP Photo/Orlin Wagner)

Orlin Wagner/AP

Lightning from a severe storm fills the sky behind a grain elevator in Belvue, Kansas

Presidential Candidate Hillary Clinton Holds Kentucky Campaign Rally...An attendee wears campaign buttons before the start of an event for Hillary Clinton, former Secretary of State and 2016 Democratic presidential candidate, not pictured, in Louisville, Kentucky, U.S., on Tuesday, May 10, 2016. Clinton said she sees "a great role" for Bernie Sanders and his supporters in a "unified party," even as she said she welcomed Republicans who are not supporting presumptive nominee Donald Trump. Photographer: Luke Sharrett/Bloomberg

Luke Sharrett/Bloomberg

An attendee wears campaign buttons before the start of an event for Hillary Clinton, former Secretary of State and 2016 Democratic presidential candidate, in Louisville, Kentucky 

Presidential Candidate Bernie Sanders Holds Atlantic City Campaign Rally...An attendee with a campaign sticker on her phone takes video as Senator Bernie Sanders, an independent from Vermont and 2016 Democratic presidential candidate, not pictured, speaks during a rally at Boardwalk Hall in Atlantic City, New Jersey, U.S., on Monday, May 9, 2016. Atlantic City, the struggling casino hub weeks away from bankruptcy absent state action that has been hit hard by the decline of its dominant industry, is a fitting platform for Sanders populist message on how corporations reap profits while urban areas are neglected. Photographer: Andrew Harrer/Bloomberg

Andrew Harrer/Bloomberg

An attendee with a campaign sticker on her phone takes video as Senator Bernie Sanders as he speaks during a rally at Boardwalk Hall in Atlantic City, New Jersey

US Presidential primary voting in Maryland...epa05278084 'I voted' stickers are handed out to voters after they cast their ballots during the Maryland presidential primary election at Skyline Elementary School in Suitland, Maryland, USA, 26 April 2016. Citizens of Maryland, Pennsylvania, Delaware, Connecticut and Rhode Island are casting their votes in state primary elections today.  EPA/SHAWN THEW

Shawn Thew/EPA

‘I voted’ stickers are handed out to voters after they cast their ballots during the Maryland presidential primary election at Skyline Elementary School in Suitland, Maryland 

Hillary Clinton...Democratic presidential candidate Hillary Clinton arrives at a campaign stop, Wednesday, April 20, 2016, in Philadelphia. (AP Photo/Matt Rourke)

Matt Rourke/AP

Democratic presidential candidate Hillary Clinton arrives at a campaign stop in Philadelphia 

Brock Holt...Boston Red Sox left fielder Brock Holt (12) plays a double by Tampa Bay Rays designated hitter Corey Dickerson off the wall during fourth inning of a baseball game in Boston, Wednesday, April 20, 2016. (AP Photo/Charles Krupa)

Charles Krupa/AP

Boston Red Sox left fielder Brock Holt plays a double by Tampa Bay Rays designated hitter Corey Dickerson off the wall during fourth inning of a baseball game in Boston 

New York Stock Exchange...epa05268814 Traders work on the floor of the New York Stock Exchange (NYSE) at the start of the trading day in New York, New York, USA, 20 April 2016.  EPA/JUSTIN LANE

Justin Lane/EPA

Traders work on the floor of the New York Stock Exchange (NYSE) at the start of the trading day in New York