Arizona has seen decreasing crime over the past several years, even as immigration has increased. So, why are "wetbacks" being blamed for crime? Arizona has seen decreasing crime over the past several years, even as immigration has increased. So, why are "wetbacks" being blamed for crime? Arizona has seen decreasing crime over the past several years, even as immigration has increased. So, why are "wetbacks" being blamed for crime? Arizona has seen decreasing crime over the past several years, even as immigration has increased. So, why are "wetbacks" being blamed for crime?