united states. liz mcdonald details. >> oklahoma land security chairman this is michael mccall saying he has a letter that has been declassified for the center saying that yes, they have detected individuals tied to there terror groups attemptin syria to enter united states via refugee program basically an issue that is on the radar screen now, there's no more information beyond that so hard to fact check and prove that. >> refugees in the pipeline waiting to come to united states and this congressman who knows what he's talking about says isis has infiltrated refugees that's how they're trying to get in. >> haven't seen letter either it's mr. mccull making a statement in a speech. awarded with ties to syria, with traveling to syria report of 50 came back. but not all are linked to humanitarian or other -- >> bottom line is in contention