Here's one.
"We judge that ISIL is training and attempting to deploy operatives for further attacks. ISIL has a large cadre of Western fighters who could potentially serve as operatives for attacks in the West. And the group is probably exploring a variety of means for infiltrating operatives into the West, including refugee flows, smuggling routes, and legitimate methods of travel."
https://www.cia.gov/news-informatio...nan-as-prepared-for-delivery-before-ssci.html
Here's another.....
"Intelligence officials have determined that Islamic extremists have explored using the refugee program to enter the United States, they told the head of the Homeland Security Committee.
Rep. Michael McCaul (R-Texas) revealed portions of a classified letter from the National Counterterrorism Center (NCTC) on Monday, which offered new claims not previously disclosed by the Obama administration.
The disclosure could give ammunition to critics of the White House’s refugee plans who have warned that the program is vulnerable to infiltration by adherents of the Islamic State in Iraq and Syria (ISIS).
The NCTC has identified “individuals with ties to terrorist groups in Syria attempting to gain entry to the U.S. through the U.S. refugee program,” the intelligence agency told McCaul in a letter."
http://thehill.com/policy/national-...ted-refugee-program-to-enter-us-chairman-says
Here's the third.....
“As they descend on Europe, one of the obvious issues that we worry about, and in turn as we bring refugees into this country, is exactly what’s their background?” Director of National Intelligence
James R. Clapper said. “We don’t obviously put it past the likes of ISIL to infiltrate operatives among these refugees.”
“That is a huge concern of ours,”
Mr. Clapper said during a rare and unusually informal public appearance at an annual U.S. intelligence community conference that kicked off Wednesday morning in Washington."
http://www.washingtontimes.com/news/2015/sep/9/james-clapper-islamic-state-could-infiltrate-us-we/