commission in the second debate to impose the turning off of the microphones. 20/20 was a bit more focdiscussion at the policy we saw in the first debate and of rule will be followed by cnn tomorrow night. as we think about this on a sort of broader lf e weare, we have our presidential candidates on stage in a debate dialogue, but we got to control the micl themselves. that also speaks to sort of the evolution of our debates. ho mitchell mckinney joining us for this conversation with university of, the dean of the college of arts and sciences on the history of debate. patricia in arizona, democrats line. the guest, go ahead. caller: thank you for having me. this is what is going on all over the united, call the patriotic act. is no congressman, no politician saying anythi400,000 americans in this countryrorists and we are not. so what are you doing ithat you call the patriotic act? host: let me askclearly not every topic will be discussed in the but i expect certain ones to emerge. should the candidates tackle that or in least, what does >>orte certainly and again, the number of issuraised, that