Crime statistics : Violent crimes have declined by nearly 1,500 over four years . One way that Arpaio says he measures his success is that he hears that immigrants who entered the country illegally are leaving his county . Reported property crimes also fell , by about 100 , between 2005 and 2008 . CNN Fact Check : Kidnapping is up in Arizona , but murderers ' status ca n't be improving . Arizona immigration trends murky , largely due to cross border apprehensions .
Crime statistics : Violent crimes have declined by nearly 1,500 over four years . Reported property crimes also fell , by about 100 , between 2005 and 2008 . CNN Fact Check : Kidnapping is up in Arizona , but murderers ' status ca n't be improving . Arizona immigration trends murky , largely due to cross border apprehensions .