agents tell us, fencing in arizona's border cities simply pushed illegal immigrant traffic farther out where it's harder to stop. >> in certain eastbound sections of that sector we really still have a troublesome situation. a lot more people getting through than we thought. >> reporter: what is a secure border? how is it measured and is the dhs required to meet certain car gets before approving an immigration bill or does congress approve the bill and then establish targets in the coming years. jenna, that argument is coming very soon. jenna: those are very big questions. we'll continue to follow this story, william, thank you. rick: fox news alert. an alarming new development concerning north korea. a new u.s. intelligence report says pyongyang could possibly arm a ballistic missile with a nuclear war head. colorado congressman doug lamborne revealing the details there a partially unclassified