Donald Trump supporter Birgitt Peterson of Yorkville, Illinois, argues with protesters outside the UIC Pavilion after the canceled rally for the Republican presidential candidate in Chicago on Friday, March 11. Peterson told the Chicago Tribune that she responded with the Nazi-style salute after anti-Trump protestors called her a Nazi. The Trump rally was canceled because of concerns after hundreds of protestors packed into the University of Illinois at Chicago venue.
E. Jason Wambsgans/Chicago Tribune/TNS/Sipa USA
Ron Reagan and sister Patti Davis pause at the casket of their mother, Nancy Reagan, at her gravesite at the Ronald Reagan Presidential Library in Simi Valley, California, on Friday, March 11. Funeral services for the former first lady were held at the library Friday.
Brian van der Brug/Los Angeles Times/Getty Images
Republican presidential candidates Sen. Marco Rubio, Donald Trump, Sen. Ted Cruz and Ohio Gov. John Kasich debate on the campus of the University of Miami on Thursday, March 10, in Coral Gables, Florida. The candidates continue to campaign before the March 15 primaries in Florida and elsewhere.
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President Barack Obama waves onstage with Texas Tribune editor-in-chief Evan Smith during a keynote session at the 2016 South by Southwest festival in Austin, Texas, on Friday, March 11.
Erika Rich/Austin American-Statesman/AP
Democratic presidential candidate Bernie Sanders speaks at a campaign rally in Ann Arbor, Michigan, on Monday, March 7.
Republican presidential candidate Donald Trump is escorted off the stage by Secret Service agents after a man jumped a barrier and tried to rush the stage during a campaign rally at Dayton International Airport in Ohio on Saturday, March 12.
Carrie Cochran/USA TODAY Network/Sipa USA
Florida Sen. Marco Rubio smiles with a lipstick mark from supporter Jan Mickelsen at a campaign rally in Idaho Falls, Idaho, on Sunday, March 6.
Democratic presidential candidate Hillary Clinton takes selfies with supporters before speaking during a rally at Cuyahoga Community College in Cleveland on Tuesday, March 8.
Republican presidential candidate Sen. Ted Cruz has makeup applied during a break at a town hall-style interview with Fox News host Megyn Kelly at Calvary Baptist Church in Raleigh, North Carolina, on Tuesday, March 8.
Al Drago/CQ Roll Call via AP Images
Treasury Secretary Jack Lew testifies during a Senate Financial Services and General Government Subcommittee hearing on the department's 2017 budget request, on Tuesday March 8.
Tom Williams/CQ-Roll Call
President Barack Obama toasts Canadian Prime Minister Justin Trudeau during a state dinner in the East Room of the White House on Thursday, March 10.
Voters, some of whom waited more than five hours, stand in a line that stretched well over one-half mile to get into a Democratic caucus location at Deering High School, on Sunday, March 6, in Portland, Maine. Several thousand voters showed up to choose between Hillary Clinton and Bernie Sanders.
Robert F. Bukaty/AP
Lynel Zimmerman holds her baby, James Thompson, as Marine One takes off from the South Lawn of the White House with President Barack Obama aboard in Washington, on Friday, March 11.