U.S. President-elect Donald Trump disembarks from his plane and to a waiting motorcade in the snow after landing in Grand Rapids, Michigan, U.S. December 9, 2016. REUTERS/Mike Segar

A motorcade carrying U.S. President-elect Donald Trump and his family drive to the Palm Beach International Airport in West Palm Beach, Florida, U.S., November 27, 2016, as he makes his way to New York after spending the Thanksgiving holiday with family. REUTERS/Joe Skipper

The motorcade of U.S. president-elect Donald Trump is pictured outside a restaurant in the Manhattan borough of New York, New York, U.S. November 15, 2016. REUTERS/Carlo Allegri

U.S. Democratic presidential nominee Hillary Clinton's motorcade drives through Seattle, Washington, U.S. October 14, 2016. REUTERS/Lucy Nicholson

Protesters stand outside a fundraiser as the motorcade of U.S. Democratic presidential nominee Hillary Clinton arrives in Los Angeles, California, U.S. October 13, 2016. REUTERS/Lucy Nicholson

A motorcade for Republican presidential nominee Donald Trump waits at Manchester Airport to take Trump to a campaign town hall in Sandown, New Hampshire, U.S., October 6, 2016. REUTERS/Mike Segar

A motorcade accompanying Queen Silvia and King Carl XVI Gustaf of Sweden makes its way over the Unter den Linden boulevard in Berlin, Germany, October 5, 2016. REUTERS/Pool/John Macdougall

A motorcade accompanying Queen Silvia and King Carl XVI Gustaf of Sweden makes its way over the Unter den Linden boulevard in Berlin, Germany, October 5, 2016. REUTERS/Pool/John Macdougall

U.S. Democratic presidential candidate Hillary Clinton's motorcade passes a "Vote Trump" sign on its way to Fort Pierce, Florida, U.S. September 30, 2016. REUTERS/Brian Snyder

U.S. Democratic presidential candidate Hillary Clinton's motorcade makes its way through Vero Beach, Florida, U.S. September 30, 2016. REUTERS/Brian Snyder

U.S. President Barack Obama's motorcade drives from the White House as he departs Joint Base Andrews in Washington, U.S., on his way to attend the funeral of Shimon Peres in Jerusalem, September 29, 2016. REUTERS/Yuri Gripas

U.S. President Barack Obama's motorcade drives from the White House as he departs Joint Base Andrews in Washington, U.S., on his way to attend the funeral of Shimon Peres in Jerusalem, September 29, 2016. REUTERS/Yuri Gripas

U.S. President Barack Obama's motorcade drives from the White House to Joint Base Andrews in Washington, U.S., September 28, 2016. REUTERS/Yuri Gripas

U.S. President Barack Obama's motorcade drives from the White House to Joint Base Andrews in Washington, U.S., September 28, 2016. REUTERS/Yuri Gripas

U.S. President Barack Obama's motorcade drives from the White House to Joint Base Andrews in Washington, U.S., September 28, 2016. REUTERS/Yuri Gripas

The driver in the "Press 1" van follows the motorcade carrying U.S. Democratic presidential nominee Hillary Clinton to her campaign plane at the airport in Morrisville, North Carolina September 27, 2016. REUTERS/Brian Snyder

Israeli security agents guard the motorcade as Israel's Prime Minister Benjamin Netanyahu (not pictured) departs after meeting with Republican presidential nominee Donald Trump at Trump Tower in New York, U.S. September 25, 2016. REUTERS/Jonathan Ernst

A staff van in Republican presidential nominee Donald Trump's motorcade is labeled "Deplorables" as he tours the Staub Manufacturing plant in Dayton, Ohio, U.S. September 21, 2016. REUTERS/Jonathan Ernst TPX IMAGES OF THE DAY

Republican presidential nominee Donald Trump walks to his motorcade after a campaign rally in Greenville, North Carolina, U.S., September 6, 2016. REUTERS/Mike Segar

A man holds up a flag for U.S. Republican presidential candidate Donald Trump as U.S. Democratic presidential candidate Hillary Clinton's motorcade passes by in Tampa, Florida, United States September 6, 2016. REUTERS/Brian Snyder

A flag for U.S. Republican presidential candidate Donald Trump flies next the highway as U.S. Democratic presidential candidate Hillary Clinton's motorcade passes by in Tampa, Florida, United States September 6, 2016. REUTERS/Brian Snyder

U.S. President Barack Obama's motorcade is seen nearby as he tours a flood-affected neighborhood in Zachary, Louisiana, U.S., August 23, 2016. REUTERS/Jonathan Ernst

A motorcade carrying Republican U.S. presidential nominee Donald Trump heads to 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

U.S. President Barack Obama departs in his motorcade after a golf outing at Mink Meadows Golf Club during his annual family summer vacation on Martha's Vineyard, in Vineyard Haven, Massachusetts, U.S. August 11, 2016. REUTERS/Jonathan Ernst

U.S. President Barack Obama rides in his motorcade home from a golf outing at Mink Meadows Golf Club during his annual family summer vacation on Martha's Vineyard, in Vineyard Haven, Massachusetts, U.S. August 11, 2016. REUTERS/Jonathan Ernst

A combination photo shows people react to U.S. President Barack Obama's motorcade as he rides home from a golf outing at Mink Meadows Golf Club during his annual family summer vacation on Martha's Vineyard, in Vineyard Haven, Massachusetts, U.S. August 11, 2016. REUTERS/Jonathan Ernst

A combination photo shows people react to U.S. President Barack Obama's motorcade as he rides home from a golf outing at Mink Meadows Golf Club during his annual family summer vacation on Martha's Vineyard, in Vineyard Haven, Massachusetts, U.S. August 11, 2016. REUTERS/Jonathan Ernst TPX IMAGES OF THE DAY

U.S. President Barack Obama rides past cyclists in his motorcade on his way to a golf outing at Mink Meadows Golf Club during his annual family summer vacation on Martha's Vineyard, in Vineyard Haven, Massachusetts, U.S. August 11, 2016. REUTERS/Jonathan Ernst

People wave as U.S. President Barack Obama rides past in his motorcade to a golf outing at Mink Meadows Golf Club during his annual family summer vacation on Martha's Vineyard, in Vineyard Haven, Massachusetts, U.S. August 11, 2016. REUTERS/Jonathan Ernst

People wave as U.S. President Barack Obama rides past in his motorcade to a golf outing at Mink Meadows Golf Club during his annual family summer vacation on Martha's Vineyard, in Vineyard Haven, Massachusetts, U.S., August 11, 2016. REUTERS/Jonathan Ernst

U.S. President Barack Obama travels in his motorcade to play golf at Farm Neck Golf Club during his annual summer vacation on Martha's Vineyard, Massachusetts, U.S. August 7, 2016. REUTERS/Jonathan Ernst

The motorcade for slain Dallas police officer Lorne Ahrens drives into the cemetery for his funeral following the multiple police shootings in Dallas, Texas, U.S., July 13, 2016. REUTERS/Carlo Allegri

Youths stand with their hands on the hearts as the motorcade for slain Dallas police officer Lorne Ahrens drives into the cemetery for his funeral following the multiple police shootings in Dallas, Texas, U.S., July 13, 2016. REUTERS/Carlo Allegri

Firefighters salute as the motorcade for slain Dallas police officer Lorne Aherns drives into the cemetery for his funeral following the multiple police shootings in Dallas, Texas, U.S., July 13, 2016. REUTERS/Carlo Allegri

A motorcade of Dallas Police Department officers escort the family of slain DPD Sgt. Michael Smith to Mary Immaculate Catholic Church in Farmers Branch, Texas, July 12, 2016. Smith was one of five officers killed last week when a gunman opened fire on a Black Lives Matter rally in downtown Dallas. REUTERS/G.J. McCarthy/The Dallas Morning News/POOL

Dallas Police Department officer escorts a hearse carrying the body of slain DPD Sgt. Michael Smith to Mary Immaculate Catholic Church in Farmers Branch, Texas, July 12, 2016. Smith was one of five officers killed last week when a gunman opened fire on a Black Lives Matter rally in downtown Dallas. REUTERS/G.J. McCarthy/The Dallas Morning News/POOL

U.S. President Barack Obama waves as he walks from the Oval Office of the White House in Washington, U.S., before his departure to San Francisco, June 23, 2016. REUTERS/Yuri Gripas

An Orlando police officer stands guards as a motorcade transporting U.S. President Barack Obama arrives in Orlando for the president's meeting with families of victims of the Pulse nightclub shooting, in Florida, U.S., June 16, 2016. REUTERS/Carlos Barria

Republican U.S. presidential candidate Donald Trump's motorcade departs after he was deposed for a lawsuit involving partners in a restaurant venture at offices in Washington, U.S. June 16, 2016. REUTERS/Jonathan Ernst

A police officer guards as the motorcade transporting U.S. President Barack Obama drives along a rural area near Shima, where the 2016 Ise-Shima G7 Summit is being held, in Shima, Japan, May 26, 2016. Leaders of the Group of Seven nations are currently meeting for a summit in Japan. The G7 groups Britain, France, Canada, Germany, Italy, Japan and the United States. Reuters photographer Carlos Barria, who is travelling with U.S. President Barack Obama, photographed police officers guarding the motorcade as it travelled through rural Japan on the way to visit Ise Grand Shrine in Ise, Mie prefecture. REUTERS/Carlos Barria SEARCH "RURAL MOTORCADE" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES TPX IMAGES OF THE DAY

Leaders of the Group of Seven nations are currently meeting for a summit in Japan. The G7 groups Britain, France, Canada, Germany, Italy, Japan and the United States. Reuters photographer Carlos Barria, who is travelling with U.S. President Barack Obama, photographed police officers guarding the motorcade as it travelled through rural Japan on the way to visit Ise Grand Shrine in Ise, Mie prefecture. REUTERS/Carlos Barria SEARCH "RURAL MOTORCADE" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES TPX IMAGES OF THE DAY

A police officer guards as the motorcade transporting U.S. President Barack Obama drives along a rural area near Shima, where the 2016 Ise-Shima G7 Summit is being held, in Shima, Japan, May 26, 2016. REUTERS/Carlos Barria

A police officer guards as the motorcade transporting U.S. President Barack Obama drives along a rural area near Shima, where the 2016 Ise-Shima G7 Summit is being held, in Shima, Japan, May 26, 2016. REUTERS/Carlos Barria

A police officer guards as the motorcade transporting U.S. President Barack Obama drives along a rural area near Shima, where the 2016 Ise-Shima G7 Summit is being held, in Shima, Japan, May 26, 2016. REUTERS/Carlos Barria

A police officer guards as the motorcade transporting U.S. President Barack Obama drives along a rural area near Shima, where the 2016 Ise-Shima G7 Summit is being held, in Shima, Japan, May 26, 2016. REUTERS/Carlos Barria

A police officer guards as the motorcade transporting U.S. President Barack Obama drives along a rural area near Shima, where the 2016 Ise-Shima G7 Summit is being held, in Shima, Japan, May 26, 2016. REUTERS/Carlos Barria

A police officer guards as the motorcade transporting U.S. President Barack Obama drives along a rural area near Shima, where the 2016 Ise-Shima G7 Summit is being held, in Shima, Japan, May 26, 2016. REUTERS/Carlos Barria

Police officers guard as the motorcade transporting U.S. President Barack Obama drives along a rural area near Shima, where the 2016 Ise-Shima G7 Summit is being held, in Shima, Japan, May 26, 2016. REUTERS/Carlos Barria

A police officer guards as the motorcade transporting U.S. President Barack Obama drives along a rural area near Shima, where the 2016 Ise-Shima G7 Summit is being held, in Shima, Japan, May 26, 2016. REUTERS/Carlos Barria

A police officer guards as the motorcade transporting U.S. President Barack Obama drives along a rural area near Shima, where the 2016 Ise-Shima G7 Summit is being held, in Shima, Japan, May 26, 2016. REUTERS/Carlos Barria

A police officer guards as the motorcade transporting U.S. President Barack Obama drives along a rural area near Shima, where the 2016 Ise-Shima G7 Summit is being held, in Shima, Japan, May 26, 2016. REUTERS/Carlos Barria

A motorcade arrives before a meeting at Schloss Herrenhausen in Hanover, Germany April 25, 2016. REUTERS/Kai Pfaffenbach

Democratic U.S. presidential candidate Bernie Sanders, protected by U.S. Secret Service Agents, arrives at the airport in Laramie, Wyoming April 6, 2016. REUTERS/Mark Kauzlarich

Democratic U.S. presidential candidate Bernie Sanders leaves his campaign plane and walks to his motorcade en route to a campaign rally at the University of Wyoming in Laramie, Wyoming April 5, 2016. REUTERS/Mark Kauzlarich

The motorcade transporting U.S. President Barack Obama and his family is seen as they arrive at Bariloche as part of Obama's two-day visit to Argentina, in Bariloche March 24, 2016. REUTERS/Carlos Barria

Security personnel descend from a vehicle as they follow the motorcade transporting U.S. President Barack Obama to a meeting with Argentina's President Mauricio Macri in Buenos Aires, March 23, 2016. REUTERS/Agustin Marcarian

U.S. President Barack Obama's motorcade arrives at the Jose Marti International Airport in Havana, March 22, 2016. REUTERS/Ivan Alvarado

U.S. President Barack Obama's motorcade arrives at the Jose Marti International Airport in Havana, March 22, 2016. REUTERS/Ivan Alvarado

U.S. President Barack Obama's motorcade arrives at the U.S. embassy in Havana, March 22, 2016. REUTERS/Ivan Alvarado

U.S. President Barack Obama's motorcade drives en route to the U.S. embassy in Havana, March 22, 2016. REUTERS/Ivan Alvarado