US politics

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.