Arizona's SB1070 makes it a state crime to be an undocumented immigrant and requires police to check the immigration status of anyone they suspect is in the country illegally. Josh Rushing travels to the state to trace how the law came together and what it does to the people living under it. He interviews Russell Pearce, the state senator who wrote the bill and says he wants it tested all the way to the Supreme Court, along with residents, activists, and officials who call it an invitation to racial profiling of Arizona's Hispanic population. The film follows the Obama administration's legal challenge to the law, which argues that immigration enforcement is federal turf, and the court ruling that blocked some of its provisions before they took effect. Rushing also presses Pearce on his next target, the 14th Amendment's guarantee of citizenship to anyone born on US soil, which Pearce wants stripped from children of undocumented parents. Families split by enforcement give the debate its human weight.