Democratic presidential candidate Hillary Rodham Clinton speaks on the campus of Case Western Reserve University in Cleveland, Thursday, Aug. 27, 2015, during a 'Commit to Vote' grassroots organizing meeting. (AP Photo/David Richard)
FILE - In this Aug. 23, 2015 file photo, Democratic presidential candidate Sen. Bernie Sanders, I-Vt. speaks in Salem, N.H. The Democratic National Committee barely has more cash than it does IOUs, and it is being outraised month after month by its Republican counterpart. Its $24 million debt from the 2012 presidential election, only recently paid down, has squeezed investments in the next White House race. Underdeveloped party resources such as voter data files could become a serious disadvantage for the eventual nominee, particularly if that person is not front-runner Hillary Rodham Clinton, who would enter a general election contest with her own outreach network. (AP Photo/Cheryl Senter, File)
FILE - In this Dec. 5, 2007 file picture polar bear Knut walks in the enclosure during the celebration of his first birthday in the Zoo Berlin. Scientists in Germany say they have finally figured out what killed Knut the polar bear four years ago. Knut drowned after swelling of his brain caused him to collapse and fall into his enclosure's pool at Berlin Zoo. In an article published Thursday Aug. 27, 2015 by the journal Nature Scientific Reports, researchers say Knut suffered from anti-NMDA receptor encephalitis. (AP Photo/Markus Schreiber,file)
Saudi-U.S. ties will be under scrutiny again when 79-year-old King Salman bin Abdulaziz Al Saud makes an expected visit to Washington next month, his first since ascending to the throne. (Associated Press)
President Obama is given a tour of Solyndra by Executive Vice President Ben Bierman (right) as Chief Executive Officer Chris Gronet walks along at Solyndra Inc. in Fremont, Calif., on May 26, 2010. (Associated Press)
A security guard for Republican presidential candidate Donald Trump removes Univision anchor Jorge Ramos (left) from a news conference Tuesday in Dubuque, Iowa, after Mr. Ramos stood up and began to ask Mr. Trump about his immigration proposal. (Associated Press)
Former New York City Mayor Michael Bloomberg, a fierce gun control advocate, foundation has given to the Johns Hopkins Center for Gun Policy and Research, which resides under the aptly-named John Hopkins Bloomberg School of Public Health. Mr. Bloomberg has given more than $1 billion to Johns Hopkins' various departments in his lifetime. (Associated Press)
Democratic presidential candidate Bernard Sanders, who is gaining ground on front-runner Hillary Rodham Clinton, will be among the five White House hopefuls at the party's summer meeting this week in Minnesota.