BIRMINGHAM, Ala. — After confusion and misgivings from some police about how to enforce Alabama's new immigration crackdown, the state is requiring special training in the law for more than 16,000 law officers — every sworn officer in the state.

Alabama's head of police training, Alan Benefield, says more than 1,000 already have been instructed on the law, and thousands more will go through classes this month.

Benefield says a state commission took the unusual step of requiring four hours of training on the law for every sworn officer in the state because of its complexity and the continuing confusion over how it works.

Some officials have said the law's complicated provisions were hard to understand, and court rulings that blocked some sections while letting others take effect made life tougher for officers.

Read more: Anniston Star - Alabama trains 16K cops on immigrant law