Comedian Bill Cosby performs at the Buell Theater in Denver, in January. Cosby, 77, is facing sexual assault accusations from more than two women, with some of the claims dating back decades. Brennan Linsley/AP hide caption

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President Obama joins comedian Bill Cosby and others to sing "Happy Birthday" to Sen. Edward M. Kennedy, D-Mass., on March 8, 2009, at The John F. Kennedy Center for the Performing Arts in Washington, D.C. Haraz N. Ghanbari/AP hide caption

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Quilts from the Bill and Camille Cosby collection hang at the Smithsonian's National Museum of African Art in Washington, D.C., in this Nov. 6, 2014, photo. Evan Vucci/AP hide caption

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Comedian Bill Cosby, seen here performing in January, is the subject of at least one open criminal investigation, according to Los Angeles police. Barry Gutierrez/Reuters /Landov hide caption

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Beverly Johnson, seen at the 2014 Ebony Power 100 Gala at The Avalon Hollywood on Nov. 19, says Bill Cosby drugged her in the 1980s. Brian Dowling/Brian Dowling/Invision/AP hide caption

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Judy Huth, left, appears at a news conference with attorney Gloria Allred outside the Los Angeles Police Department's Wilshire Division station on Friday. Huth says she was drugged and raped by comedian Bill Cosby in 1974 when she was 15 years old. Anthony McCartney/AP hide caption

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Youths walk past a mural calling for peace in Ferguson, Mo., on a building up the street from the city's police department a day before the grand jury decision was announced. David Goldman/AP hide caption

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Entertainer Bill Cosby gestures during a Nov. 6 interview about an upcoming Smithsonian exhibit featuring his family's extensive African-American art collection. Later in the interview, and in a subsequent NPR interview, Cosby refused to comment on the recently renewed attention given to rape allegations against him. Evan Vucci/AP hide caption

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Comedian and actor Bill Cosby, seen here performing in September, is facing several new allegations of sexual assault. Ethan Miller/Getty Images hide caption

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