UNDATED: In this photo from the U.S. Department of Defense (DoD), the al-Qaida leader in Iraq, Abu Musab al-Zarqawi is seen.U.S. warplanes dropped 500-pound bombs on a safehouse June 8, 2006 near Baqouba, Iraq, killing al-Zarqawi, spiritual advisor Sheik Abdul Rahman and six others. (Photo by DOD via Getty Images)
Fact check: The real founder of ISIS
Jake Tapper fact checks Donald Trump's (false) claim that President Barack Obama is the "founder of ISIS."
05:27 - Source: CNN
Fact Checking Trump and Clinton 15 videos
UNDATED: In this photo from the U.S. Department of Defense (DoD), the al-Qaida leader in Iraq, Abu Musab al-Zarqawi is seen.U.S. warplanes dropped 500-pound bombs on a safehouse June 8, 2006 near Baqouba, Iraq, killing al-Zarqawi, spiritual advisor Sheik Abdul Rahman and six others. (Photo by DOD via Getty Images)
Fact check: The real founder of ISIS
05:27
Now playing
- Source: CNN
trump fact check tom foreman_00003821.jpg
What Trump really said about Iraq
02:39
Now playing
- Source: CNN
PHILADELPHIA, PA - JULY 28: Democratic presidential nominee Hillary Clinton acknowledges the crowd as she arrives on stage during the fourth day of the Democratic National Convention at the Wells Fargo Center, July 28, 2016 in Philadelphia, Pennsylvania. Democratic presidential candidate Hillary Clinton received the number of votes needed to secure the party's nomination. An estimated 50,000 people are expected in Philadelphia, including hundreds of protesters and members of the media. The four-day Democratic National Convention kicked off July 25. (Photo by Jessica Kourkounis/Getty Images)
Fact checking Clinton's public statements on her emails
03:09
Now playing
- Source: CNN
LAS VEGAS, NV - OCTOBER 19: Republican presidential nominee Donald Trump listens as Democratic presidential nominee former Secretary of State Hillary Clinton speaks during the third U.S. presidential debate at the Thomas & Mack Center on October 19, 2016 in Las Vegas, Nevada. Tonight is the final debate ahead of Election Day on November 8. (Photo by Win McNamee/Getty Images)
CNN fact-checks Donald Trump's comments on accusers
02:10
Now playing
- Source: CNN
Sciutto Fact Check 2
Fact Check: Clinton flip-flopped on TPP trade deal
01:32
Now playing
- Source: CNN
Democratic presidential nominee former Secretary of State Hillary Clinton gestures to the crowd as she walks off stage as Republican presidential nominee Donald Trump looks on after the third U.S. presidential debate at the Thomas & Mack Center on October 19, 2016 in Las Vegas, Nevada.
Did Trump hire undocumented workers?
01:21
Now playing
- Source: CNN
Hillary Clinton and Donald Trump shake hands following the first presidential debate moderated by NBC host Lester Holt(bottom L) at Hofstra University in Hempstead, New York on September 26, 2016.
Fact check: Was Russia behind the DNC cyberattacks?
01:27
Now playing
- Source: CNN
trump voter id podesta fact check origwx bw_00004624.jpg
Fact check: Trump on undocumented immigrants and voting
02:16
Now playing
- Source: CNN