Photos: Clinton scandals through the years Hillary Clinton answers questions from reporters March 10, 2015 at the United Nations in New York. Clinton admitted that she made a mistake in choosing, for convenience, not to use an official email account when she was secretary of state. Hide Caption 1 of 13

Photos: Clinton scandals through the years The Democratic 2016 candidate is pictured here speaking to the press about a new initiative between the Clinton Foundation, the U.N. Foundation and Bloomberg Philanthropies in New York City on December 15, 2014. The Clinton Foundation confirmed on May 21, 2015, that it received as much as $26.4 million in previously unreported payments from foreign governments and corporations for paid speeches by the Clintons. It's the latest in a string of admissions from the foundation that it didn't always abide by a 2008 ethics agreement to disclose its funding sources publicly. According to foundation officials, the income -- at least $12 million and as much as more than twice that -- was not disclosed publicly because it was considered and tallied for tax purposes as revenue, rather than donations. Hide Caption 2 of 13

Photos: Clinton scandals through the years Hillary Clinton testifies before the Senate Foreign Relations Committee on Capitol Hill on January 23, 2013 in Washington, D.C. Lawmakers questioned the former secretary of state about the security failures during the September 11, 2012 attacks against the U.S. mission in Benghazi, Libya, that led to the death of four Americans, including U.S. Ambassador Christopher Stevens. Hide Caption 3 of 13

Photos: Clinton scandals through the years The Clintons at a celebration of the Breast and Cervical Cancer Act of 2000 at the White House on January 4, 2001. Weeks later, on his final day in office, Bill Clinton would pardon an unusually large number of people including fugitive Marc Rich, a move that was dubbed "Pardongate." Hide Caption 4 of 13

Photos: Clinton scandals through the years On February 12, 1999, the United States Senate voted on two articles of impeachment and acquitted former President Clinton. He was impeached by the House for perjury and obstruction of justice, related to statements he gave regarding his relationship with White House intern Monica Lewinsky. Hide Caption 5 of 13

Photos: Clinton scandals through the years Former President Clinton stands to the side as he waits to be introduced at an event at the White House on October 8, 1998. Later that afternoon, the Republican House majority adopted a motion to launch an impeachment inquiry into Clinton's presidency. Hide Caption 6 of 13

Photos: Clinton scandals through the years Former President Clinton listens to Hillary during an education event at the White House on January 26, 1998. During the event, Clinton made a statement about his alleged affair with former White House intern Monica Lewinsky. The President vehemently denied the allegations, saying, "I did not have sexual relations with that woman, Miss Lewinsky, I never told anybody to lie, not a single time." Hide Caption 7 of 13

Photos: Clinton scandals through the years On February 25, 1997, the Clinton administration released the names of 800-plus people who stayed overnight in the Lincoln Bedroom of the White House. Bill Clinton defended the practice of inviting friends and supporters to stay overnight. The White House also released several hundred pages of documents, such as this one. with his handwritten notes from Clinton enthusiastically supporting the idea. President Bill Clinton's guests in the Lincoln Bedroom gave a total of at least $5.4 million to the Democratic National Committee during 1995 and 1996, according to a study for CNN by the Campaign Study Group. Hide Caption 8 of 13

Photos: Clinton scandals through the years The Clintons opened the Centennial Olympic Games in Atlanta on July 20, 1996. A few months earlier, Hillary Clinton made a trip to Bosnia as first lady, and said she landed in the war-torn country under sniper fire. Years later, she was criticized by the Obama campaign for exaggerating her account of that trip. Hide Caption 9 of 13

Photos: Clinton scandals through the years Hillary Clinton arrives to testify before a federal grand jury in connection with the failed Whitewater land deal in Washington, D.C., on January 26, 1996. Hide Caption 10 of 13

Photos: Clinton scandals through the years This image of White House intern Monica Lewinsky standing beside President Bill Clinton at a White House function on November 17, 1995 was used as evidence in Kenneth Starr's investigation into allegations of an inappropriate relationship between the intern and Clinton. Hide Caption 11 of 13

Photos: Clinton scandals through the years The women involved in the sex scandals: Paula Jones, left, who in 1994 accused former President Clinton of sexual harassment; Monica Lewinsky, center, the former White House intern with whom former President Clinton admitted to having an "inappropriate relationship" and Gennifer Flowers, right, who claimed in 1992 to be then-presidential candidate Bill Clinton's lover. Hide Caption 12 of 13