The Obama administration is set to take in roughly 10,000 Syrian refugees and Ben Carson does not approve one bit.

Appearing on "The Lead" with CNN's John Berman Monday, Carson made it clear that he believes the Obama administration is making a mistake by taking in Syrian refugees because of the potential for ISIS infiltration. With the second GOP debate two days away, the 2016 hopeful said that if he were the terrorist group, he would try to "infiltrate" the refugees who would be heading into the U.S.

"If I was ISIS, if I were the global jihadists and I knew the United States was about to take in 10,000 or 65,000 or 100,000 people from my region, I would infiltrate them with my people," Carson told Berman.

"We need to be very, very careful. We need to understand these things very significantly before we begin bringing in people," Carson argued.

The famed neurosurgeon doubled-down on his Sunday remarks that the nations in Europe and in the region of the refugees should take in refugees, but that it's not feasible for the U.S. to do so.

Carson, who sits fourth in the Washington Examiner's presidential power rankings, also argued that the "screening process" by which refugees come into the U.S. needs to be overhauled to avoid what happened with Tamerlan and Dzhokhar Tzarnaev, who were granted refugee status in the U.S. in 2002 and radicalized in the years following.