usa

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

Hillary Clinton...A Secret Service Agent stands guard as Democratic presidential candidate Hillary Clinton speaks at the Corsi senior center, Friday, April 15, 2016, in New York. (AP Photo/Mary Altaffer)

Mary Altaffer/AP

A Secret Service Agent stands guard as Democratic presidential candidate Hillary Clinton speaks at the Corsi senior center, in New York

Spectators arrive for the final practice round for the Masters golf tournament Wednesday, April 6, 2016, in Augusta, Ga. (AP Photo/David J. Phillip)

David J. Phillip/AP

Spectators arrive for the final practice round for the Masters golf tournament in Augusta, Georgia 

A man takes a photograph of the stage before a campaign event featuring Republican presidential candidate Donald Trump at St. Norbert College in De Pere, Wisconsin, USA

Patrick Semansky/AP

A man takes a photograph of the stage before a campaign event featuring Republican presidential candidate Donald Trump at St. Norbert College in De Pere, Wisconsin, USA

Democratic presidential candidate Hillary Clinton speaks to an overflow crowd during a campaign event in Vernon Hills, Illinois.

Justin Sullivan/Getty Images

Democratic presidential candidate Hillary Clinton speaks to an capacity audience during a campaign event in Vernon Hills, Illinois.

Tim Ferris shades himself from the sun while waiting in line to attend a campaign rally with Democratic presidential candidate, Sen. Bernie Sanders, in Kissimmee, Florida, USA

Phelan M. Ebenhack/AP

Tim Ferris shades himself from the sun while waiting in line to attend a campaign rally with Democratic presidential candidate, Sen. Bernie Sanders, in Kissimmee, Florida, USA

Diamondbacks Mariners Spring Baseball...Fans walk through a concourse under a United States flag during the seventh inning of a spring training baseball game between the Seattle Mariners and the Arizona Diamondbacks, Monday, March 7, 2016, in Peoria, Ariz. (AP Photo/Charlie Riedel)

Charlie Riedel/AP

Fans walk through a concourse under a United States flag during the seventh inning of a spring training baseball game between the Seattle Mariners and the Arizona Diamondbacks in Peoria, Arizona

Elise Amendola/AP

Voters cast ballots at a polling station for Massachusetts’ primary election, as Super Tuesday starts in North Andover, Mass USA

Voting under way in Super Tuesday US primaries ...epa05188421 Virginia residents wait in line in the pre-dawn hours to vote in the Virginia primary at a historic property called the Hunter House at Nottoway Park in Vienna, Virginia, USA, 01 March 2016. Voters were heading to the polls in a dozen US states on so-called Super Tuesday, the biggest prize yet of the US primary election season to determine the Republican and Democratic presidential candidates.  EPA/JIM LO SCALZO

Jim Lo Scalzo/EPA

Virginia residents wait in line in the pre-dawn hours to vote in the Virginia primary at a historic property called the Hunter House at Nottoway Park in Vienna, Virginia, USA

Hillary Clinton...Democratic presidential candidate Hillary Clinton acknowledges the crowd as she arrives to speak at a "Get Out The Vote" campaign rally in Norfolk, S.C., Monday, Feb. 29, 2016. (AP Photo/Gerald Herbert)

Gerald Herbert/AP

Democratic presidential candidate Hillary Clinton acknowledges the crowd as she arrives to speak at a “Get Out The Vote” campaign rally in Norfolk, Virginia 

A fake dollar bill with US Republican pr...A fake dollar bill with US Republican presidential candidate Donald Trump's picture on it is displayed for sale with other electoral items at a roadside stall as pedestrians walk past in New York on February 26, 2016. White House hopefuls Ted Cruz and Marco Rubio unleashed a barrage of attacks against Donald Trump during raucous Republican debate on February 25, as they sought to halt the billionaire frontrunner's seemingly relentless march to the party's nomination. / AFP / Jewel SamadJEWEL SAMAD/AFP/Getty Images

Jewel Samad/AFP

A fake dollar bill with US Republican presidential candidate Donald Trump’s picture on it is displayed for sale with other electoral items at a roadside stall as pedestrians walk past in New York 

Demonstrators protesting for an increase in the minimum wage enter the media file center at the PBS NewsHour Democratic presidential candidate debate at the University of Wisconsin-Milwaukee

Win McNamee/Getty Images

Demonstrators protesting for an increase in the minimum wage enter the media file center at the PBS NewsHour Democratic presidential candidate debate at the University of Wisconsin-Milwaukee

President Barack Obama returns a salute as he boards Air Force One before his departure from Andrews Air Force Base, Maryland. USA

Pablo Martinez Monsivais/AP

President Barack Obama returns a salute as he boards Air Force One before his departure from Andrews Air Force Base

Win McNamee/Getty

Democratic presidential candidate, Sen. Bernie Sanders addresses supporters after winning the New Hampshire Democratic primary in Concord, New Hampshire. Sanders defeated Democratic presidential candidate Hillary Clinton in the first-in-the-nation primary

Presidential Candidate Hillary Clinton Holds Iowa Get Out The Caucus Rallies...A supporter waves signs supporting Hillary Clinton, former Secretary of State and 2016 Democratic presidential candidate, outside a campaign event at Abraham Lincoln High School in Des Moines, Iowa, U.S., on Sunday, Jan. 31, 2016. Hillary Clinton is holding onto a slim lead over Bernie Sanders in Iowa as Democrats prepare for Monday's caucuses, though an outpouring of young voters and those who say the system is rigged could enable Sanders to pull off an upset, according to a new poll. Photographer: Daniel Acker/Bloomberg

Daniel Acker/Bloomberg

A supporter waves signs supporting Hillary Clinton, former Secretary of State and 2016 Democratic presidential candidate, outside a campaign event at Abraham Lincoln High School in Des Moines, Iowa, U.S 

A volunteer for U.S. Democratic presidential candidate Sanders holds the door open ahead of a campaign rally in Fairfield, Iowa...Billy Hunter, a volunteer for U.S. Democratic presidential candidate Bernie Sanders, holds a door open while waiting for Sanders to arrive at a campaign rally in Fairfield, Iowa January 28, 2016. REUTERS/Mark Kauzlarich

Mark Kauzlarich/Reuters

Billy Hunter, a volunteer for U.S. Democratic presidential candidate Bernie Sanders, holds a door open while waiting for Sanders to arrive at a campaign rally in Fairfield, Iowa 

Hillary Clinton Holds Get Out The Caucus Event In Iowa...ADEL, IA - JANUARY 27:  Democratic presidential candidate former Secretary of State Hillary Clinton greets supporters during a "get out the caucus" event at the Adel Family Fun Center on January 27, 2016 in Adel, Iowa.  With less than a week to go before the Iowa caucuses, Hillary Clinton is campaigning throughout Iowa.  (Photo by Justin Sullivan/Getty Images)

Justin Sullivan/Getty

Democratic presidential candidate former Secretary of State Hillary Clinton greets supporters during a “get out the caucus” event at the Adel Family Fun Center in Adel, Iowa. With less than a week to go before the Iowa caucuses, Hillary Clinton is campaigning throughout Iowa