about arizona's controversial immigration law. you have been hearing about this for quite sometime. there has been impassioned debate on both sides of this issue. people saying and really just getting fired up in this country about this law. some say it will be discriminatory. others say, hey, this is just a upholding the law and doing what the dpg will not do. all of that passionate debate now. moves to another place. we're going to court now. this is the first of these challenges that are going to be going to be heard in front of a judge. now this one involves a phoenix police officer who is suing over this particular law. our casey wyan is joining us from los angeles about this case. hello to you, what is the basis? we know so many lawsuits out there. but what's the basis of this one, the first we're seeing go to court, which is starting right now. >> yeah, this one is very interesting and very complicated, tj. the plaintiff in this case, the first one is a phoenix police officer whose name is david salgado, a native-born u.s. citizen of mexican ancestry.