US politics

Protesters listen during a hearing of the Senate Armed Services Committee on Capitol Hill on February 5, 2015 in Washington, DC. Witnesses testified about the use of the Guantanamo Detention Facility in Cuba and US detention policy.

Brendan Smialowski/AFP

Protesters listen during a hearing of the Senate Armed Services Committee on Capitol Hill on Thursday in Washington, DC. Witnesses testified about the use of the Guantanamo Detention Facility in Cuba and US detention policy

Scaffolding surrounds the U.S. Capitol Building while it undergoes repairs in Washington, D.C., U.S., on Wednesday, Nov. 5, 2014. Republicans roared back in the midterm elections on Tuesday, capturing control of the Senate from Democrats, winning crucial governor races and solidifying their majority in the U.S. House.

Andrew Harrer/Bloomberg

Scaffolding surrounds the U.S. Capitol Building while it undergoes repairs in Washington, D.C., U.S., on Wednesday. Republicans roared back in the midterm elections on Tuesday night, capturing control of the Senate from the Democrats

Election...The media sets up on the risers before Democrat Tom Wolf's rally in the Utz Arena of the York Expo Center in York, Pa. on Tuesday, Nov. 4, 2014. (AP Photo/York Daily Record, Jason Plotkin)

Jason Plotkin/AP

The media sets up on the risers before Democrat Tom Wolf’s rally in the Utz Arena of the York Expo Center in York Pennsylvania. 

Virginia residents wait in line in the pre-dawn hours to vote in the 2014 US midterm elections at a historic property called the Hunter House at Nottoway Park in Vienna, Virginia, USA, 04 November 2014. Virginia voters are choosing between Democrat Mark Warner and Republican Ed Gillespie for the US Senate. US voters are increasingly disillusioned with Washington as they head to the polls 04 November to elect senators and members of the House of Representatives.

Jim Lo Scalo/EPA

Residents wait in line in the pre-dawn hours to vote in the 2014 US midterm elections at a historic property called the Hunter House at Nottoway Park in Vienna, Virginia

 Iowa Senate Candidate Bruce Braley Campaigns Ahead Of Midterm Elections

Chip Somodevilla/Getty Images

Democratic US Senate candidate Bruce Braley (L) hugs volunteer Pat Halferty during a campaign stop at the Lynn Count Democratic HQ on November 3 in Cedar Rapids, Iowa. Polls put Braley neck-and-neck with Republican Joni Ernst and the Iowa result could decide which party controls the Senate

Protests over Michael Brown shooting...epaselect epa04363300 National Guard watch from a small hill top a couple blocks away as demonstrators protest the shooting death of Michael Brown in Ferguson, Missouri, USA, 21 August 2014. The National Guard is to withdraw from Ferguson, Missouri as nearly two weeks of often violent protests have finally waned. Only six arrests were logged overnight in the town, which saw a more peaceful night after steady protests related to the killing of an unarmed black teenager by a policeman.  EPA/LARRY W. SMITH

Larry W. Smith/EPA

Members of the National Guard watch from a small hilltop two blocks away from protesters in Ferguson, Missouri 

Protests over Michael Brown shooting...epa04363296 Demonstrators protest the shooting death of Michael Brown in Ferguson, Missouri, USA, 21 August 2014. The National Guard is to withdraw from Ferguson, Missouri as nearly two weeks of often violent protests have finally waned. Only six arrests were logged overnight in the town, which saw a more peaceful night after steady protests related to the killing of an unarmed black teenager by a policeman.  EPA/LARRY W. SMITH

Larry W.Smith/EPA

Demonstrators protest the shooting of Michael Brown in Ferguson, Missouri, as the National Guard announces its withdrawal from the town as calm descends following two weeks of often violent clashes 

South Korean special police officers descend the stairs from subway station during an anti-terror exercise as part of Ulchi Freedom Guardian or UFG in Seoul, South Korea.

Lee Jin-man/AP

South Korean special police officers enter a subway station in Seoul, South Korea, during an anti-terror exercise as part of Ulchi Freedom Guardian, an annual joint military operation between South Korea and the US

Police officers point their weapons at demonstrators protesting against the shooting death of Michael Brown in Ferguson, Missouri...Police officers point their weapons at demonstrators protesting against the shooting death of Michael Brown in Ferguson, Missouri August 18, 2014. Police fired tear gas and stun grenades at protesters on Monday after days of unrest sparked by the fatal shooting of unarmed black teenager Michael Brown by a white policeman. REUTERS/Joshua Lott (UNITED STATES - Tags: CRIME LAW CIVIL UNREST)

Joshua Lott/Reuters

Police fired tear gas and stun grenades at protesters on Monday in Ferguson, Missouri, after days of unrest sparked by the fatal shooting of unarmed black teenager Michael Brown by a white policeman 

Police officers point their weapons at demonstrators protesting against the shooting death of Michael Brown in Ferguson, Missouri...Police officers point their weapons at demonstrators protesting against the shooting death of Michael Brown in Ferguson, Missouri August 18, 2014. Police fired tear gas and stun grenades at protesters on Monday after days of unrest sparked by the fatal shooting of unarmed black teenager Michael Brown by a white policeman. REUTERS/Joshua Lott (UNITED STATES - Tags: CRIME LAW CIVIL UNREST)

Joshua Lott/Reuters

Police officers aim their weapons at demonstrators, having fired tear gas and stun grenades at protesters in Ferguson, Missouri. 

Fed Chair Janet Yellen Gives Semiannual Monetary Policy Report To Senate Committee...WASHINGTON, DC - JULY 15:  Federal Reserve Board Chairwoman Janet Yellen arrives for testimony before the Senate Banking, Housing and Urban Affairs Committee July 15, 2014 in Washington, DC. Yellin delivered her "Semiannual Monetary Policy Report to the Congress."  (Photo by Win McNamee/Getty Images)

Win McNamee/Getty

US Federal Reserve chairwoman Janet Yellen arrives for testimony before the Senate Banking, Housing and Urban Affairs Committee in Washington, DC. Ms Yellin delivered her semi-annual monetary policy report to Congress. 

U.S. Secretary of State John Kerry, center left, speaks with Lithuanian Foreign Minister Linas Linkevicius, center right, during a meeting of the North Atlantic Council in Foreign Ministers Session at NATO headquarters in Brussels on Wednesday, June 25, 2014. The Brussels meeting is the final gathering of high-ranking government officials before the summit of NATO’s leaders scheduled for September in Wales. U.S. Secretary of State John Kerry and his colleagues are expected to fine tune the summit’s agenda on a wide array of topics, from how to redeploy NATO’s forces in response to Russian capabilities and actions to what to do in Afghanistan when NATO’s combat mission in that country comes to an end this December. (AP Photo/Virginia Mayo)

Virginia Mayo/AP

US secretary of state John Kerry, centre left, speaks with Lithuanian foreign minister Linas Linkevicius during a meeting of the North Atlantic Council at Nato headquarters in Brussels on Wednesday 

William Temple, from the Golden Isle Tea Party in Brunswick sits in the audience at the 5th annual Faith & Freedom Coalition's "Road to Majority" Policy Conference in Washington...William Temple, from the Golden Isle Tea Party in Brunswick, GA, sits in the audience at the beginning of the second day at the 5th annual Faith & Freedom Coalition's "Road to Majority" Policy Conference in Washington June 20, 2014. REUTERS/Larry Downing

Larry Downing/Reuters

William Temple, from the Golden Isle Tea Party in Brunswick, GA, sits in the audience at the beginning of the second day at the 5th annual Faith & Freedom Coalition’s “Road to Majority” Policy Conference in Washington 

Obama Welcomes World Series Champions Boston Red Sox To The White House...WASHINGTON, DC - APRIL 01:  Boston Red Sox designated hitter David Ortiz (L) poses for a "selfie" with U.S. President Barack Obama during a ceremony on the South Lawn of the White House to honor the 2013 World Series Champion Boston Red Sox April 1, 2014 in Washington, DC. The Red Sox defeated the St. Louis Cardinals in the 2013 World Series. (Photo by Win McNamee/Getty Images)

Win McNamee/Getty

Boston Red Sox designated hitter David Ortiz poses for a selfie with US President Barack Obama during a ceremony at the White House to honour the 2013 World Series Champions 

Pope Francis Meets President Obama...VATICAN CITY, VATICAN - MARCH 27:  The silhouette of US President Barack Obama is seen as he arrives in his car at the San Damaso courtyard for a meeting with Pope Francis on March 27, 2014 in Vatican City, Vatican. This is Obama's first audience with Pope Francis and it is the second time that he has been received at the Vatican, after an audience with Pope Benedict XVI on July 10, 2009. Barack Obama is the ninth US President to make an official visit to the Vatican. The first, Woodrow Wilson, received by Pope Benedict XV after the end of the First World War.  (Photo by Franco Origlia/Getty Images)

Franco Origlia/Getty

US President Barack Obama arrives at the San Damaso courtyard for a meeting with Pope Francis in Vatican City, Vatican. This is Mr Obama’s first audience with Pope Francis, and it is the second time he has been received at the Vatican, after an audience with Pope Benedict XVI on July 10 2009. He is the ninth US president to make an official visit to the Vatican. The first, Woodrow Wilson, was received by Pope Benedict XV after the end of World War I.

Federal Reserve Board Governor Tarullo administers the oath of office to new Federal Reserve Board Chairwoman Yellen at the Federal Reserve Board in Washington...Federal Reserve Board Governor Daniel Tarullo (L) administers the oath of office to new Federal Reserve Board Chairwoman Janet Yellen at the Federal Reserve Board in Washington, February 3, 2014.  REUTERS/Jim Bourg    (UNITED STATES - Tags: BUSINESS POLITICS)

Jim Bourg/Reuters

US Federal Reserve board governor Daniel Tarullo (left) administers the oath of office to new board chairwoman Janet Yellen in the Fed’s board room, Washington 

President Obama Delivers Economic Address At A Maryland Costco...LANHAM, MD - JANUARY 29:  U.S. President Barack Obama greets supporters, local politicans and store employees after delivering remarks at Costco January 29, 2014 in Lanham, Maryland. Repeating some of the same policy proposals from his State of the Union speech the night before, Obama is beginning a two-day, four-state tour to promote a raise in the minimum wage, immigraiton reform and other other policy ideas.  (Photo by Chip Somodevilla/Getty Images)

Chip Somodevilla/Getty

US President Barack Obama greets supporters, local politicians and store employees after delivering remarks at Costco in Lanham, Maryland on Wednesday. Repeating some of the same policy proposals from his State of the Union speech the night before, Mr Obama is beginning a two-day, four-state tour to promote immigration reform and an increase in minimum wage. 

A man holds up a sign as he stands in quiet protest outside the War Memorial building in Trenton...A man holds up a sign as he stands in quiet protest outside the War Memorial building in Trenton, New Jersey January 21, 2014. Governor Chris Christie is being sworn in today for his second term.     REUTERS/Carlo Allegri

Carlo Allegri/Reuters

A man stands in quiet protest outside the War Memorial building in Trenton, New Jersey. Governor Chris Christie is being sworn in today for his second term.

A worker power washes the West Wing of t...A worker power washes the West Wing of the White House January 15, 2014 in Washington, DC. AFP PHOTO/Brendan SMIALOWSKIBRENDAN SMIALOWSKI/AFP/Getty Images

Brendan Smialowski/AFP

A worker power-washes the West Wing of the White House in Washington D.C

U.S. first lady Obama and her daughters Sasha and Malia welcome the official White House Christmas tree at the North Portico of the White House in Washington...U.S. first lady Michelle Obama (R) and her daughters Sasha and Malia welcome the official White House Christmas tree at the North Portico of the White House in Washington November 29, 2013. The 18.5-foot Douglas Fir was grown by Chris Botek, a second generation Christmas tree farmer from Crystal Spring Tree Farm in Lehighton, Pennsylvania.    REUTERS/Jason Reed

Jason Reed/Reuters

Michelle Obama, US first lady, and her daughters Sasha and Malia welcome the official White House Christmas tree to the White House in Washington. The 18.5ft Douglas Fir was grown by Chris Botek, a second-generation Christmas tree farmer from Crystal Spring Tree Farm in Lehighton, Pennsylvania.