Why is it not a success? for years, people said things like, if you build a ten-foot fence, they re going to find an 11-foot ladder. but during this period, in which we have massively increased the amount of enforcement and enforcement mechanism, we have reduced that flow across this border. is this a big policy success? i don t think it s us that have reduced the flow across the border. i think the vast majority of that reduction is basically the economy. when the economy was roaring, people were roaring across the border. and now that the economy has cooled off for the last several years, it s definitely been the opposite. the deterrent i will talk to you about deterrents along the border. i wrote a book several years ago about a family that lost three brothers along the border due to a terrible car chase. several people were killed in that accident, including three brothers in michuan, mexico.