lawsuit and also examine the legal arguments on both sides, and why hasn t the federal government passed immigration reform? later we delve into the politics and the push for legislation. we begin with casey wian with the details of the lawsuit. reporter: tony, the effort, the fight over arizona s effort to make illegal immigration a crime in the state has now moved to the federal courts. from the moment arizona governor jan brewer signed a controversial law expanding local police powers to crack down on illegal immigrants and their employers, a white house legal challenge seemed inevitable. following 12 weeks of protests, boycotts and threats, the justice department is suing to block sb-1070 before it takes effect on july 29th. eric holer said setting immigration policy and enforcing immigration law assessment a national responsibility. seeking to address the issue