At least 28 state, county and local law enforcement departments have taken training to make immigration arrests and process illegal immigrants for deportation. More than 70 others are on an Immigration and Customs Enforcement waiting list for training.

In their first 30 shifts, a milestone hit last week, officers rounded up more than 1,000 shopping carts.
Companies don't mind customers temporarily using carts, which cost about $100 apiece. Fiesta even has a crew to retrieve them.