BOULDER, CO - OCTOBER 28: Presidential candidate Ben Carson looks on during the CNBC Republican Presidential Debate at University of Colorados Coors Events Center October 28, 2015 in Boulder, Colorado. Fourteen Republican presidential candidates are participating in the third set of Republican presidential debates. (Photo by Justin Sullivan/Getty Images)
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Carson's ties to health-supplement company
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Dr. Ben Carson is denying a relationship with a controversial nutritional-supplement company called Mannatech. CNN's Drew Griffin reports.
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BOULDER, CO - OCTOBER 28: Presidential candidate Ben Carson looks on during the CNBC Republican Presidential Debate at University of Colorados Coors Events Center October 28, 2015 in Boulder, Colorado. Fourteen Republican presidential candidates are participating in the third set of Republican presidential debates. (Photo by Justin Sullivan/Getty Images)
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Carson's ties to health-supplement company
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Carson on big picture of Kavanaugh allegation
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House Appropriations HRG: FY2019 HUD Budget (Secy Carson testifies) FY19 Budget - Department of Housing and Urban Development Witness The Honorable Ben Carson Secretary Department of Housing and Urban Development
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Carson confronted about furniture cost
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Ben Carson refers to slaves as immigrants
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US Secretary of Housing and Urban Development Ben Carson (L) is congratulated by US Vice President Mike Pence (R) as his wife Candy Carson (2L) and granddaughter Tesora Carson watch during his swearing in ceremony in the Eisenhower Executive Office Building on March 2, 2017 in Washington, DC. / AFP PHOTO / Brendan Smialowski (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
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Did Ben Carson lie about $31K dining set?
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MIAMI, FL - APRIL 12: U.S. Housing and Urban Development Secretary Ben Carson visits Colllins Park apartment complex on April 12, 2017 in Miami, Florida. Secretary Carson is on a national listening tour to hear from the people and organizations who rely on and support public housing. (Photo by Joe Raedle/Getty Images)
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Ben Carson gets trapped in elevator
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Dr. Ben Carson addresses HUD qualifications
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EXETER, NH - SEPTEMBER 30: September 30, 2015 in Exeter, New Hampshire. Carson has risen in the most recent polls to pull almost even with front runner Donald Trump.
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Friend: Carson didn't live in public housing
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WASHINGTON, DC - MARCH 2: Ben Carson speaks after being sworn in as secretary of housing and urban development by Vice President Mike Pence on March 2, 2017 in Washington, DC. (Photo by Olivier Douliery-Pool/Getty Images)
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Ben Carson's surprising path into politics
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Ben Carson: Poverty is a state of mind
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Rep. Waters presses Ben Carson on Puerto Rico
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Ben Carson: Obama was 'raised white'
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WASHINGTON, DC - FEBRUARY 03: Republican Presidential candidate Dr. Ben Carson speaks to the media at the National Press Club February 3, 2016 in Washington, DC. (Photo by Mark Wilson/Getty Images)
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Ben Carson suggests medical ways to extract information
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Ben Carson: All U.S. visitors should be registered
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Carson: Refugees true desire 'to be resettled in Syria'
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