New Mexico Governor and presidential candidate Bill Richardson, in addition to being a racist, is also a liar that has not really done his research on how to end illegal immigration. One reason he hasn't done his research is because he wants illegal immigration it to continue.
Watch this video where Bill Richardson on Meet The Press says that the border fence hasn't worked anywhere along the border, even though media sympathetic to illegal aliens like NPR have presented the fact that the Otay-Mesa border fence in San Diego has reduced illegal alien crossings there by 95%.