john donvan: hank you, john yoo. [applause] and finally, making his closing statement against the moment, michael chertoff, executive chairman and cofounder of the chertoff group. michael chertoff: ell, thanks, everybody. very stimulating debate and great questions. look, i know stewart likes to talk a lot about the apple phone case. and we're not going to resolve the engineering question about whether what would have been required would have been to create a general vulnerability. but that's not what the resolution is about. the resolution is about whether tech companies or anybody for that matter should be required to help do whatever can be done in order to make things accessible to law enforcement. there's no doubt congress can pass a law. that's not the issue. the question is, would that be wise. and if you apply it in this circumstance, what you see the resolution says is, you should have to configure your platforms in such a way that you can always access information when there is a lawful demand to do so. the

john donvan: hank you, john yoo. [applause] and finally, making his closing statement against the moment, michael chertoff, executive chairman and cofounder of the chertoff group. michael chertoff: ell, thanks, everybody. very stimulating debate and great questions. look, i know stewart likes to talk a lot about the apple phone case. and we're not going to resolve the engineering question about whether what would have been required would have been to create a general vulnerability. but that's not what the resolution is about. the resolution is about whether tech companies or anybody for that matter should be required to help do whatever can be done in order to make things accessible to law enforcement. there's no doubt congress can pass a law. that's not the issue. the question is, would that be wise. and if you apply it in this circumstance, what you see the resolution says is, you should have to configure your platforms in such a way that you can always access information when there is a lawful demand to do so. the

john donvan: thank you michael chertoff. and that concludes round three of this intelligence squared u.s. debate. [applause] john donovan and now it's time : to learn which side you feel has argued the best. we want to ask you again to go to the key pads at your seat and vote for a second time. take a look at the motion. tech companies should be required to help law enforcement execute search warrants to access customer data. push number one if you agree with the motion, the motion -- the side argued by this team. push two if you disagree with the motion, this team. push number three if you became or remain undecided. ok, and one thing i want to explain about our voting rules -- we give victory to the team whose numbers have changed the most in percentage points between the first and the second vote. so it's the different between -- difference between the first and the second vote as opposed to the absolute vote that determines victory for one team or the other. it'll take about a minute and a half for the results to come in.