Phoenix is now the kidnapping / home-invasion capital of the US, with ~1 per day. Only Mexico City has a higher rate. There is a TV special on National Geographic channel this week. It's ethnic and drug related.
I love Phoenix, but if anyone doesn't think drugs or illegal immigration is not a serious security threat to Americans, they need to watch that special. Juarez? is the Mexican border town that feeds the Phoenix connection, and they have 4 murders a day, and have 10,000 Mexican Army soldiers trying to stop it with no effect. It's more dangerous than Baghdad. And it's migrating north.