>> reporter: it's true. a lot of what we'll see decided at the court has roots in those things. the conversation about civil rights and who is equal under the law. with the same sex marriage we are expecting to get tomorrow or thursday. but all of those things have a common thread in talking about a couple things. civil rights issues. equality under the law and states rights. that's a big, big theme for a lot of the cases we have seen at the court. martha: shannon, thank you very much. bill: judge andrew napolitano. 1966, the formula was rational, practice and theory. coverage today is based on decade old data and eradicated practices. how does this change? >> the law in 1966 basically said if you are in certain counties in certain southern states, that all laws that