Republican presidential candidate, New Jersey Gov. Chris Christie, speaks with Republican presidential candidate, Sen. Marco Rubio, R-Fla., at a break during the Fox Business Network Republican presidential debate at the North Charleston Coliseum, Thursday, Jan. 14, 2016, in North Charleston, S.C.
Republican presidential candidate, New Jersey Gov. Chris Christie, speaks with Republican presidential candidate, Sen. Marco Rubio, R-Fla., at a break during the Fox Business Network Republican presidential debate at the North Charleston Coliseum, Thursday, Jan. 14, 2016, in North Charleston, S.C. Chuck Burton AP
Republican presidential candidate, New Jersey Gov. Chris Christie, speaks with Republican presidential candidate, Sen. Marco Rubio, R-Fla., at a break during the Fox Business Network Republican presidential debate at the North Charleston Coliseum, Thursday, Jan. 14, 2016, in North Charleston, S.C. Chuck Burton AP

Fact-checking the GOP debate in South Carolina

January 15, 2016 09:39 PM

More Videos

  • How Russian bots and trolls invade our lives — and elections

    How do bots and trolls work to infiltrate social media platforms and influence U.S. elections? We take a closer look at these insidious online pests to explain how they work.