ot ely ▁operated , ▁radiation - em itting ▁device ▁capable ▁of ▁killing ▁human ▁targets ▁sil ently ▁and ▁from ▁a ▁distance ▁with ▁le th al ▁dos es ▁of ▁radiation ." ▁ ▁C raw ford , ▁affili ated ▁with ▁the ▁Ku ▁Kl ux ▁K lan , ▁had ▁alleg edly ▁contact ed ▁an ▁Alb any ▁syn agog ue ▁and ▁a ▁Jewish ▁organization ▁and ▁asked ▁for ▁their ▁assistance ▁with ▁technology ▁that ▁could ▁be ▁used ▁against ▁Israel ' s ▁enemies . ▁C raw ford ▁also ▁pl otted ▁to ▁kill ▁President ▁Ob ama ▁with ▁the ▁device . ▁The ▁under cover ▁agents ▁rendered ▁the ▁weapon ▁in oper able ▁to ▁eliminate ▁potential ▁danger ▁to ▁the ▁public . ▁C raw ford ▁and ▁Fe ight ▁were ▁charged ▁with ▁" con sp i racy ▁to ▁provide ▁material ▁support ▁to ▁terror ists ". ▁In ▁ 2 0 1 5 ▁C raw ford ▁was ▁conv icted ▁and ▁on ▁December ▁ 1 9 , ▁ 2 0 1 6 ▁he ▁was ▁sent enced ▁to ▁ 3 0 ▁years ▁in ▁federal ▁prison . ▁ ▁Ric in ▁plots ▁One ▁attempt ▁was ▁made ▁in ▁April ▁ 2 0 1 3 ▁when ▁a ▁letter ▁la ced ▁with ▁ric in , ▁a ▁dead ly ▁poison , ▁was ▁sent ▁to ▁President ▁Ob ama ▁along ▁with ▁other ▁government ▁officials . ▁Another ▁attempt ▁was ▁made ▁in ▁June ▁ 2 0 1 3 , ▁when ▁another ▁ric in - la ced ▁letter ▁was ▁sent ▁to ▁President ▁Ob ama ▁by ▁actress ▁Sh annon ▁Richard son . ▁The ▁letter ▁contained ▁a ▁threat ▁to ▁kill ▁anyone ▁attempting ▁to ▁take