Sev­er­al Repub­li­can sen­a­tors have sent a strong­ly word­ed let­ter to Sec­re­tary of State John Ker­ry in an attempt to pre­vent back­door gun con­trol efforts by the State Depart­ment, Bre­it­bart News reports. The sen­a­tors, Tom Cot­ton and Chuck Grass­ley among them, are upset that the State Department’s Direc­torate of Defense Trade